practicefinal

# practicefinal - STA 2023 SECTION 1080 FINAL EXAM NAME SHOW...

This preview shows pages 1–4. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: STA 2023, SECTION 1080 FINAL EXAM NAME: __________________________________ SHOW YOUR WORK AND REASONING ON ALL PROBLEMS 1. A VVIQ (Vividness of Visual Imagery Questionnaire) is used to assess visual imagery skills. The average score over the general population is 67. A researcher tried to determine whether athletes have a lower average VVIQ level. She administered this test to 50 varsity athletes. (a). Define the parameter of interest in words. (2 pts.) (b). State the null and alternative hypotheses in terms of this parameter. (3 pts.) (c). For the sample of 50 athletes, the mean VVIQ score was 65.6 and the sample standard deviation was 18.2. Write the formula and find the numerical value of the test statistic that is appropriate for this problem. (6 pts.) 1 (d). Find the p- value of this test. (6 pts.) (e) If 05 . = α , state the proper conclusion of this test of significance. (3 pts.) 2. (a) Give an example of two disjoint events. (2 pts.) (b) Give an example of two independent events. (2 pts.) 2 3. The American Heart Association claims that only 12% of adult males in the U.S. could pass the President’s Physical Fitness minimu m requirements. If we selected a random sample of 6 adult U.S. males, what is the probability that exactly 3 of the 6 could pass these minimum requirements? (Assume independence between individual results.) (8 pts.) 4. Declare each statement as true (T) or false (F) (2 pts. each) _______ (a) p- value is the probability compute d under H o of getting a test statistic value as or more extreme (in the direction of H a ) that what was actually observed.observed....
View Full Document

## This note was uploaded on 12/15/2011 for the course STA 2023 taught by Professor Ripol during the Spring '08 term at University of Florida.

### Page1 / 11

practicefinal - STA 2023 SECTION 1080 FINAL EXAM NAME SHOW...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online