Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

Connect one-on-one with {0} who will answer your question

1. Use the information below to...

1.

Use the information below to answer the question.

The following table provides data on a sample of customers who visited a local restaurant. The restaurant owner believes that the average profit per customer exceeds $25.

36.73

35.50

25.92

38.36

41.65

25.50

18.78

19.78

33.14

22.22

20.85

26.23

22.13

32.33

28.46

34.15

34.72

24.21

24.20

28.95

21.84

19.74

20.75

Which of the following is the test statistic?

(Points : 1)

1.717

-1.867

1.867

-1.826

Question 2.2. A one-tailed test is employed when the null hypothesis ________. (Points : 1)

is structured as "?"

specifies a direction of relationship

is structured as "="

falls in the upper tail of the distribution

Question 3.3.

Use the below information to answer the question.

A company wishes to test whether the proportion of female managers is the same as the proportion of male managers. The following table provides data for a sample of employees.

Females

Males

Number of managers

18

23

Sample size

45

75

Identify the p-value. (Points : 1)

0.1483

0.2966

0.8517

0.7034

Question 4.4. If the confidence coefficient is 0.9, ________. (Points : 1)

we expect that 9 samples out of 100 will support the null hypothesis

we expect that 90 out of 100 samples will support the null hypothesis

we expect that 10 samples out of 100 will support the null hypothesis

we expect that all 100 samples will support the null hypothesis

Question 5.5. The hypothesized sampling distribution of the test statistic is divided into ________ parts. (Points : 1)

four

two

six

three

Question 6.6. Increasing the sample size is one way to ________. (Points : 1)

reduce ß

reduce the power of the test

increase the standard error of the mean

determine the exact ß value

Question 7.7. Hypothesis testing always assumes that ________. (Points : 1)

the alternative hypothesis is true

the null hypothesis is true

the probability of the null hypothesis being true is less than 50%

the probability of the alternative hypothesis being true is less than 50%

Question 8.8. Which of the following is not an appropriate alternative hypothesis for the null hypothesis, H0: mean production cost = $2.00? (Points : 1)

H1: mean production cost > $2.00

H1: mean production costs < $2.00

H1: mean production costs = $2.00

H1: mean production costs ? $2.00

Question 9.9. The alternative hypothesis ________. (Points : 1)

describes an existing theory or belief that is accepted as correct in the absence of contradictory data.

is based on new information provided by population data.

is based on new information provided by sample data.

is not deemed to be an important part of inferential statistics.

Question 10.10. The decision to reject or fail to reject a null hypothesis is based on computing a ________ from sample data. (Points : 1)

population parameter

critical value

level of significance

test statistic

Question 11.11. Hypothesis testing involves drawing inferences about two contrasting ________ relating to the value of a population parameter. (Points : 1)

theorems

data sets

assumptions

propositions

Question 12.12. The t-Test Statistic has a t distribution with ________ degrees of freedom. (Points : 1)

n

n + 1

n - 2

n - 1

Question 13.13.

Use the below information to answer the question.

A company wishes to test whether the proportion of female managers is the same as the proportion of male managers. The following table provides data for a sample of employees.

Females

Males

Number of managers

18

23

Sample size

45

75

Which of the following is the test statistic? [Hint: Use PHStat] (Points : 1)

1.96

-1.04

-1.96

1.04

Question 14.14. The alternative hypothesis is denoted by ________. (Points : 1)

HN

H0

H1

HAl

Question 15.15. An online retailer wanted to see if purchasing patterns were different between male consumers and female consumers. Males were found to have spent a mean of $85 per month on online purchases, whereas females were found to have spent a mean of $78 per month. An independent samples t-test was conducted to assess the observed difference between the two groups of consumers. A two-tailed test was applied. The value of the t-Test Statistic for the observed differences was -4.7, where the p-value is less than 0.0002. What conclusion can be made about the observed difference? (Points : 1)

There is a statistically significant difference between the two groups of consumers.

There is statistically no significant difference between the two groups of consumers.

The independent samples t-test is not the appropriate hypothesis-testing proce

Use the information below to answer the question.

The following table provides data on a sample of customers who visited a local restaurant. The restaurant owner believes that the average profit per customer exceeds $25.

36.73

35.50

25.92

38.36

41.65

25.50

18.78

19.78

33.14

22.22

20.85

26.23

22.13

32.33

28.46

34.15

34.72

24.21

24.20

28.95

21.84

19.74

20.75

Which of the following is the test statistic?

(Points : 1)

1.717

-1.867

1.867

-1.826

Question 2.2. A one-tailed test is employed when the null hypothesis ________. (Points : 1)

is structured as "?"

specifies a direction of relationship

is structured as "="

falls in the upper tail of the distribution

Question 3.3.

Use the below information to answer the question.

A company wishes to test whether the proportion of female managers is the same as the proportion of male managers. The following table provides data for a sample of employees.

Females

Males

Number of managers

18

23

Sample size

45

75

Identify the p-value. (Points : 1)

0.1483

0.2966

0.8517

0.7034

Question 4.4. If the confidence coefficient is 0.9, ________. (Points : 1)

we expect that 9 samples out of 100 will support the null hypothesis

we expect that 90 out of 100 samples will support the null hypothesis

we expect that 10 samples out of 100 will support the null hypothesis

we expect that all 100 samples will support the null hypothesis

Question 5.5. The hypothesized sampling distribution of the test statistic is divided into ________ parts. (Points : 1)

four

two

six

three

Question 6.6. Increasing the sample size is one way to ________. (Points : 1)

reduce ß

reduce the power of the test

increase the standard error of the mean

determine the exact ß value

Question 7.7. Hypothesis testing always assumes that ________. (Points : 1)

the alternative hypothesis is true

the null hypothesis is true

the probability of the null hypothesis being true is less than 50%

the probability of the alternative hypothesis being true is less than 50%

Question 8.8. Which of the following is not an appropriate alternative hypothesis for the null hypothesis, H0: mean production cost = $2.00? (Points : 1)

H1: mean production cost > $2.00

H1: mean production costs < $2.00

H1: mean production costs = $2.00

H1: mean production costs ? $2.00

Question 9.9. The alternative hypothesis ________. (Points : 1)

describes an existing theory or belief that is accepted as correct in the absence of contradictory data.

is based on new information provided by population data.

is based on new information provided by sample data.

is not deemed to be an important part of inferential statistics.

Question 10.10. The decision to reject or fail to reject a null hypothesis is based on computing a ________ from sample data. (Points : 1)

population parameter

critical value

level of significance

test statistic

Question 11.11. Hypothesis testing involves drawing inferences about two contrasting ________ relating to the value of a population parameter. (Points : 1)

theorems

data sets

assumptions

propositions

Question 12.12. The t-Test Statistic has a t distribution with ________ degrees of freedom. (Points : 1)

n

n + 1

n - 2

n - 1

Question 13.13.

Use the below information to answer the question.

A company wishes to test whether the proportion of female managers is the same as the proportion of male managers. The following table provides data for a sample of employees.

Females

Males

Number of managers

18

23

Sample size

45

75

Which of the following is the test statistic? [Hint: Use PHStat] (Points : 1)

1.96

-1.04

-1.96

1.04

Question 14.14. The alternative hypothesis is denoted by ________. (Points : 1)

HN

H0

H1

HAl

Question 15.15. An online retailer wanted to see if purchasing patterns were different between male consumers and female consumers. Males were found to have spent a mean of $85 per month on online purchases, whereas females were found to have spent a mean of $78 per month. An independent samples t-test was conducted to assess the observed difference between the two groups of consumers. A two-tailed test was applied. The value of the t-Test Statistic for the observed differences was -4.7, where the p-value is less than 0.0002. What conclusion can be made about the observed difference? (Points : 1)

There is a statistically significant difference between the two groups of consumers.

There is statistically no significant difference between the two groups of consumers.

The independent samples t-test is not the appropriate hypothesis-testing proce

Show More

Show Less

Was this answer helpful?

Describe your issueThe assistant will guide you

Chat 1:1 with a tutorLicensed Experts are available 24/7

100% satisfaction guaranteeGet all the answers you need

Related Calculus and Above Questions

At 5% significance level conduct a hypothesis test to

At 5% significance level conduct a hypothesis test to ascertain whether the incomes of male and female employees are significantly different ( assume unequal variance)a) state the null and research hy… read more

In 2006, a study was conducted to compare the salaries of

In 2006, a study was conducted to compare the salaries of male and female college graduates who found job right after college.Male: n = 25, mean = $43,975, standard deviation = $10,420 Female: n=25, m… read more

Can you determine whether the CEO is correct that the

Can you determine whether the CEO is correct that the productivity of the workers is dependent on the number of steps that they walk daily? (Hint : Check for male workers, female workers and total wor… read more

Two plots at Rothamsted Experimental Station were studied

Two plots at Rothamsted Experimental Station were studied for production of wheat straw. For a random sample of years, the annual wheat straw production (in pounds) from one plot was as follows. 6.40 … read more

This is my Mid-term, and I have to get it finished by

Hello, This is my Mid-term, and I have to get it finished by 2am, are you available? if so, I have copied and pasted it below :). 1. A ________ displays the minimum, first quartile, median, third quar… read more

I am taking a test right now, and i have never used this site

I am taking a test right now, and i have never used this site before.....can i send you a question, and can you send me the answer? How much does it usually cost?… read more

Question 21.21. For a sample size of 172, the degrees of

Question 21.21. For a sample size of 172, the degrees of freedom are ________. (Points : 2) 172 171 13.11 173 Question 22.22. The α used to calculate a confidence interval can be understood as _______… read more

Identify the null hypothesis Ho and the alternative hypothesis

Identify the null hypothesis Ho and the alternative hypothesis H1. A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p, is less than 1 in every one thousa… read more

The questions that I need answer are already on the site just

The questions that I need answer are already on the site just need the answers for 1. The Chi-square test is very sensitive to small differences in frequency differences. (Points : 1) True False Quest… read more

Identify the null hypothesis Ho & the alternative hypothesis H1

Identify the null hypothesis Ho and the alternative hypothesis H1. A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p, is less than 1 in every one thousa… read more

1. The Chi-square test is very sensitive to small differences

1. The Chi-square test is very sensitive to small differences in frequency differences. (Points : 1) True False Question 2. 2. The probability that the actual population mean will be outside of a 98% … read more

CAN YOU HELP ME FINISH THESE QUESTIONS????1. Vegetarians

CAN YOU HELP ME FINISH THESE QUESTIONS???? 1. Vegetarians and Omnivores. Philosophical and health issues are prompting an increasing number of Taiwanese to switch to a vegetarXXXXX XXXXXfestyle. A stu… read more

1) 5 students from each class were randomly selected from

1) 5 students from each class were randomly selected from all 44 different undergraduate classes in the Eberly College of Science at Penn State. The 220 undergraduate students completed an anonymous s… read more

I have a question on a questionnaire which ranks disagree to

I have a question on a questionnaire which ranks disagree to agree on a scale of 1 to 10. If I then want to compare between two groups of respondents, e.g.: male and female to see if there are any sig… read more

Please help me with this test! I have no idea! :( 5.The

Please help me with this test! I have no idea! :( 5.The test statistic in a two tailed test is z=-1.63. Find the P-value. 6. Assume that a hypothesis test of the given claim will be conducted. Identif… read more

Any conclusion drawn for the t-test statistical process is

Any conclusion drawn for the t-test statistical process is only as good as the research question asked and the null hypothesis formulated. T-tests are only used for two sample groups, either on a pre … read more

Conduct a two-tailed hypothesis test given the information

Conduct a two-tailed hypothesis test given the information below. Assuming that the population variances are equal for male and female Grade Point Averages (GPAs), use the following sample data to tes… read more

How would you use this in a two or more sample hypothesis testing Step

How would you use this in a two or more sample hypothesis testing Step 0ne-formulate testable hypothesis: The null hypothesis is that that the mean for males and females is the same. Ho: u1 = u2; Ha: … read more

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.

JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.

Web sites like justanswer.com/legal

...leave nothing to chance.

...leave nothing to chance.

Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.

Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.

I will tell you that...the things you have to go through to be an Expert are quite rigorous.

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

Los Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

Hesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

Kernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

Woodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

Elkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

Dallas, TX

< Previous | Next >

Mr. Gregory White

Master's Degree

114 satisfied customers

M.A., M.S. Education / Educational Administration

SusanAthena

Master's Degree

102 satisfied customers

Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

Dr Arthur Rubin

Doctoral Degree

97 satisfied customers

Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers

JACUSTOMER-yrynbdjl-

Master's Degree

42 satisfied customers

I have a MS in Mathematics and I have taught Mathematics for 10 years at the college level.

Don

Master's Degree

29 satisfied customers

M.S. Astronautical Engineering. Math/Sci/Comp Tutor

Kofi

PhD in Statistics

7,955 satisfied customers

Masters in Mathematics and Statistics

Sandhya_sharma

Master's Degree

5,547 satisfied customers

I hold M.Sc and M.Phil degrees in math and have several years of teaching experience.

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.