Question
Dr. Christina Cuttleman, a nutritionist, claims that the average number of calories in a serving of popcorn is 75 with a standard deviation of 7.
Dr. Christina Cuttleman, a nutritionist, claims that the average number of calories in a serving of popcorn is 75 with a standard deviation of 7. A sample of 50 servings of popcorn was found to have an average of 78 calories.
a. Should z test or t test be used?
b. Check Dr. Cuttleman's claim at a = 0.05.
Step by Step Solution
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Step: 1
Test m 75 with normal dist n Hypothesis test H 0 m 75 Nu...
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Elementary Statistics A Step By Step Approach
Authors: Allan Bluman
8th Edition
73386103, 978-0073386102
