Chapter 10 Practice Problems - Ch10 1 The business manager of a local health clinic is interested in estimating the difference between the fees for

Chapter 10 Practice Problems - Ch10 1 The business manager...

This preview shows page 1 - 3 out of 3 pages.

Ch10 1. The business manager of a local health clinic is interested in estimating the difference between the fees for extended office visits in her center and the fees of a newly opened group practice. She gathered the following information regarding the two offices. Health Clinic Group Practice Sample Size 50 visits 45 visits Sample Mean $21 $19 Population Standard Deviation $2.75 $3.00 Develop a 95% confidence interval estimate for the difference between the average fees of the two offices. using 2-samplezint on ti-84 0.8384 < u1 – u2 < 3.1616 2. Independent random samples taken on two university campuses revealed the following information concerning the average amount of money spent on textbooks during the fall semester. University A University B Sample Size 50 40 Average Purchase $260 $250 Population Standard Deviation( ) $20 $23 We want to determine if, on the average, students at University A spent more on textbooks then the students at University B. a. Compute the test statistic. T=2.17
Image of page 1
b. Compute the p -value. P-value = .015 c. What is your conclusion? Let = .05. Reject the null
Image of page 2
Image of page 3

You've reached the end of your free preview.

Want to read all 3 pages?

  • Fall '14
  • Statistics, SOLUTIONS, Study, Ch10, Confidence Intervals, Test Statistic, Pvalue, Hypothesis Test, Statistical hypothesis testing, Health Clinic, Vegetarian Journal

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes