A fast-food chain advertises that the mediumsize serving of French fries weighs 135 grams. A reporter took

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A fast-food chain advertises that the mediumsize serving of French fries weighs 135 grams. A reporter took a random sample of 10 medium orders of French fries and weighed each order. The weights (in grams) were 111, 124, 125, 156, 127, 134, 135, 136, 139, 141. Assume the population distribution is Normal.

a. Test the hypothesis that the medium servings have a population mean different from 135 grams. Use a significance level of 0.05.

b. Construct a 95% confidence interval for the population mean. How does your confidence interval support your conclusion in part a? Do you think the consumers are being misled about the serving size? Explain.

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a To test the hypothesis that the medium servings have a population mean different from 135 grams we can use a ttest The null hypothesis is that the p...View the full answer

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Introductory Statistics Exploring The World Through Data

ISBN: 9780135163146

3rd Edition

Authors: Robert Gould, Rebecca Wong, Colleen N. Ryan

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Question Posted: Jul 15, 2021 01:35 AM

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A fast-food chain advertises that the mediumsize serving of French fries weighs 135 grams. A reporter took

Question:

Step by Step Answer:

a To test the hypothesis that the medium servings have a population mean different from 135 grams we can use a ttest The null hypothesis is that the p...View the full answer

Introductory Statistics Exploring The World Through Data

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