Question

In: Statistics and Probability

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.

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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

90

2

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.

Expert Solution

orchestra answered 1 year ago

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