Suppose the coffee industry claimed that the average adult drinks 1.7 cups of coffee per day. To test this claim, a random sample of 40 adults was selected, and their average coffee consumption was found to be 1.9 cups per day. Assume the standard deviation of daily coffee consumption per day is 0.6 cups. Using a = 0.05, complete parts a and b below. Determine the null and alternative hypotheses. Ho: H = 1.7 H:H # 1.7 The z-test statistic is 2.10. (Round to two decimal places as needed.) The critical z-score(s) is(are). (Round to two decimal places as needed. Use a comma to separate answers as needed.)
Suppose the coffee industry claimed that the average adult drinks 1.7 cups of coffee per day. To test this claim, a random sample of 40 adults was selected, and their average coffee consumption was found to be 1.9 cups per day. Assume the standard deviation of daily coffee consumption per day is 0.6 cups. Using a = 0.05, complete parts a and b below. Determine the null and alternative hypotheses. Ho: H = 1.7 H:H # 1.7 The z-test statistic is 2.10. (Round to two decimal places as needed.) The critical z-score(s) is(are). (Round to two decimal places as needed. Use a comma to separate answers as needed.)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:Suppose the coffee industry claimed that the average adult drinks 1.7 cups of coffee per day. To test this
claim, a random sample of 40 adults was selected, and their average coffee consumption was found to be
1.9 cups per day. Assume the standard deviation of daily coffee consumption per day is 0.6 cups. Using
a = 0.05, complete parts a and b below.
Determine the null and alternative hypotheses.
Ho: H = 1.7
H;:H # 1.7
The z-test statistic is 2.10.
(Round to two decimal places as needed.)
The critical z-score(s) is(are).
(Round to two decimal places as needed. Use a comma to separate answers as needed.)
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