Answered: met. The Normal probability plot is…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A company tested 11 random brands of vanilla yogurt and found the number of calories per serving given below. Complete parts 1 through 3 below.

133 162 155 123 113 109 174 165 112 127 98

1. Are the assumptions and conditions for inference satisfied?

A. The Randomization Condition is met. The Normal probability plot is relatively straight, but the histogram is bimodal and asymmetric, so the Nearly Normal Condition is not met.

B. The Randomization Condition is met. The Normal probability plot is relatively straight and the histogram is roughly unimodal and symmetric, so the Nearly Normal Condition is met.

C. The Randomization Condition is not met. The Normal probability plot is relatively straight and the histogram is roughly unimodal and symmetric, so the Nearly Normal Condition is met.

D. The Randomization Condition is met. The Normal probability plot is not roughly straight and has an outlier, and the histogram is skewed right, so the Nearly Normal Condition is not met.

2) Find a 95% confidence interval for the true mean number of calories per serving. _____<μ(calories)<____ (Round to two decimal places as needed.)

3) A diet guide claims that you will get an average of 130 calories from a serving of vanilla yogurt. What does this confidence interval indicate about this claim?

A.The confidence interval is entirely above the diet guide's claim of 130 calories, so this claim is supported by the confidence interval.

B. The confidence interval contains the diet guide's claim of 130 calories, so this claim is supported by the confidence interval.

C. The confidence interval is entirely above the diet guide's claim of 130 calories, so this claim is not supported by the confidence interval.

D. The confidence interval is entirely below the diet guide's claim of 130 calories, so this claim is not supported by the confidence interval.

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