The typically number of credits to be considered full time is 12 credits. The OSU Statistics...

The typically number of credits to be considered full time is 12 credits. The OSU Statistics department is curious whether the ST201 online students take something different than 12 credits on average.

Use the information from the student information survey for our class to perform a hypothesis test.

̅? s n

State: Is there evidence that the average number of credits for ST201 students is other than 12? Vis ualize :

a. (2 points) Describe the histogram of the sampled data in context. Recall, you should include the shape, center, and spread. Is there any visual evidence the average number of credits is less than 15?

Plan:

b. (1 point) State the null and alternative hypotheses to answer the question of interest.
c. (2 points) Check conditions for inference. List the conditions and state whether they are met.

12.4

4.1

Jager © Intellectual property of Katie Jager.

Solve:

d. (3 points) Calculate the test statistic. Show work.

(1 point) What is the p-value for the test? Is it one or two sided?
(3 points) Calculate a 99% confidence interval for μ. Show work.

Conclude :

g. Write a four-part conclusion describing the results.

 (1 point) Provide a statement in terms of the alternative hypothesis.
 (1 point) State whether (or not) to reject the null.
 (1 point) Give an interpretation of the point and interval estimate.
 (1 points) Include context.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Use the student dataset for this question. students are considered “full-time” students if they are enrolled in 12 or more credits in a given semester.

Use the student dataset for this question. students are considered “full-time” students if they are enrolled in 12 or more credits in a given semester. What percent of respondents in the student dataset are “full-time” students? Consider your result to part (a) as the best estimate for the probability of any randomly selected student being full-time. Based on that response, what is the probability that in a class of 20 students they will all be full-time? Credits 13 12...

Administrative Medical total Full time 8 3 11 Part time 4 12 16 total 12 15...

Administrative Medical total Full time 8 3 11 Part time 4 12 16 total 12 15 27 What is the probability that a randomly selected employee works part-time or as a medical employee? What is the probability that a randomly selected employee works on a full-time basis given that they are an administrative employee? report to 3 decimal places.

The dean of a University estimates that the mean number of classroom hours for full time...

The dean of a University estimates that the mean number of classroom hours for full time faculty is 11.0. As a member of sydent council, you want to test the claim. A sample of the number of classroom hours for 8 full-time faculty is shown below. 11.8 6.4 8.6 10.4 12.6 13.6 7.9 9.1 At the .01 level of significance, is the Dean’s claim valid? Use the P-value approach. Clearly state the null and alternative hypotheses. Locate the claim and...

The number of hours that should be worked by a full-time bar attendant is stipulated in...

The number of hours that should be worked by a full-time bar attendant is stipulated in the Queensland award as 36.25 hours per week. However, the secretary of the Queensland Council of Unions believes that the average work hours per week of full-time bar attendants is not that specified in the award. From a random sample of 38 workers, it was found that the average working week was 36.65 hours with a variance of 0.85 hours squared. On the basis...

The data contained in <professional> are the number of males employed full time in a professional...

The data contained in <professional> are the number of males employed full time in a professional occupation in Australia from August quarter 1996 to August quarter 2008. Time period Male full-time employed professionals ('000) Aug-96 645.6 Nov-96 675 Feb-97 661.2 May-97 659.9 Aug-97 675.2 Nov-97 700.5 Feb-98 710.7 May-98 697.8 Aug-98 711.1 Nov-98 733.6 Feb-99 751 May-99 730.4 Aug-99 704.2 Nov-99 725.7 Feb-00 735.2 May-00 743.7 Aug-00 742.7 Nov-00 746.4 Feb-01 762.7 May-01 760.5 Aug-01 765.8 Nov-01 752.7 Feb-02 759.6...

Cathy Coed is a full-time senior student at Big Research University (BRU). Cathy is considered by...

Cathy Coed is a full-time senior student at Big Research University (BRU). Cathy is considered by most as a brilliant student and has been given a $35,000-per-year scholarship. In the current year, Cathy pays the following amounts to attend BRU: Tuition $26,000 Required Lab Fees 300 Required Books and Supplies 1,000 Room and Board 7,500 What are the tax consequences (i.e., how much is income) of the $35,000 current year’s scholarship to Cathy? In answering this case, use...

Which of the following is not typically considered a reason for the existence of codes of...

Which of the following is not typically considered a reason for the existence of codes of professional ethics? a) Codes work in favour of the accounting profession by reducing the likelihood of further government regulation. b) Codes indicate how members should react to on another. c) Code make explicit those values which may be implicitly required. d) Codes provide an objective base for sanctions against people who violate the rules

Draw fully labelled graphs to get full credits. (a) Write out the IS relation and the...

Draw fully labelled graphs to get full credits. (a) Write out the IS relation and the LM relation (use the real money demand equals the real money supply). (6 points) (b) Suppose now the central bank increases the money supply. What open market operations will central bank exercise in this case? Draw the financial market diagram to show the effect on the interest rate for a given real output Y. (6 points) (c) Using your answer for (b), draw the...

In Canada between June and July in 2016, the number of full-time jobs increased by 63,200...

In Canada between June and July in 2016, the number of full-time jobs increased by 63,200 while part-time jobs fell by 108,800. The unemployment rate increased from 6.4 percent to 7.2 percent. The labour force participation rate increased from 66.5 percent to 66.6 percent. a) Explain the link between the rise in the participation rate and the rise in the unemployment rate. b) If all the workers who entered the job market were discouraged searchers, explain how the R5 unemployment...

A. Suppose you want to study the number of hours of sleep full-time undergraduate students at...

A. Suppose you want to study the number of hours of sleep full-time undergraduate students at Belmont get each evening. To do so, you obtain a list of full-time undergraduate students at Belmont, obtain a simple random sample of ten students, and ask each of them to disclose how many hours of sleep they obtained the most recent Monday. What is the population of interest in this study? What is the sample? Explain why number of hours of sleep in...

Subjects