STAT 200 Final Exam (FALL 2016) STAT 200 Final Exam 2016 | Page 10

counts 120, 85, 110, 90, and 95 for types 1, 2, 3, 4, and 5, respectively. Use a 0.05
significance
level to test the claim that the five types are equally popular. Show all work and justify your
answer.

Type

1 2

3 4 5

Number of Bags 120 85 110 90 95

(a) Identify the null hypothesis and the alternative hypothesis.
(b) Determine the test statistic. Show all work
(c) Determine the P-value. Show all work
Is there sufficient evidence to support the manager’s claim that the five types of candy
bags are equally popular? Justify your answer.

20. A STAT 200 instructor believes that the average quiz score is a good predictor of final
exam
score. A random sample of 10 students produced the following data where x is the average
quiz
score and y is the final exam score.