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Mathematics, 26.01.2021 01:00 ICyberAngel
In an article appearing in Today’s Health a writer states that the average number of calories in a serving of popcorn is 75. To determine if the average number of calories in a serving of popcorn is different from 75, a nutritionist selected a random sample of 20 servings of popcorn and computed the sample mean number of calories per serving to be 78 with a sample standard deviation of 7.
At the a = .05 level of significance, does the nutritionist have enough evidence to reject the writer’s claim?
A. No
B. Yes
C. Cannot determine
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