According to the National Coffee Drinking Study from the National Coffee Association, 40% of 18- to 24-year-olds
Question:
According to the National Coffee Drinking Study from the National Coffee Association, 40% of 18- to 24-year-olds in the United States regularly drink coffee every day. Suppose this number is accurate. In a sample of 140 students at Hope College we found that 63 of them (or 45%) regularly drink coffee. We want to test whether the daily coffee-drinking habits of students at Hope College differ from the 40% claim for the nation. Which of A–E is an appropriate way to set up the hypotheses, in symbols, for this test?
A. H0: p̂ = 0.40, Ha: p̂ ≠ 0.40
B. H0: π = 0.40, Ha: π ≠ 0.40
C. H0: p̂ = 0.45, Ha: p̂ ≠ 0.45
D. H0: π = 0.45, Ha: π ≠ 0.45
E. H0: π = 0.40, Ha: π > 0.40
Step by Step Answer:
Introduction To Statistical Investigations
ISBN: 9781119683452
2nd Edition
Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy