STAT 200 Final Exam (FALL 2016) STAT 200 Final Exam 2016 | Seite 8

(b) Determine the test statistic. Show all work
(c) Determine the P-value for this test. Show all work
(d) Is there sufficient evidence to support ABC Company’s claim that the proportion of its
employees investing in individual investment accounts is higher than 45%? Explain.
17. Mimi was curious if regular excise really helps weight loss, hence she decided to perform
a
hypothesis test. A random sample of 5 UMUC students was chosen. The students took a 30minute exercise every day for 6 months. The weight was recorded for each individual before
and after the exercise regimen. Does the data below suggest that regular exercise helps
weight
loss?
Weight (pounds)
Subject Before After
1 160 130
2 170 160
3 185 175
4 165 165
5 200 190