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A hot tub manufacturer advertises that with its heating equipment, a temperature of 100°F can be achieved on average in 15 minutes or less A random sample of 25 tubs is selected, and the time necessary to achieve a 100°F temperature is determined for each tub. The data appear to be normally distributed, and the sample mean time and sample standard deviation are 17.5 minutes and 5.2 minutes, respectively. Does this information cast doubt on the company's claim? Carry out a test of hypotheses using significance level 0.05. If the p-value is 0.012, what should our conclusion be? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b C At the a= 0.05 level of significance, there is enough evidence to conclude that company's claim is incorrect. At the a= 0.05 level of significance, there is not enough evidence to conclude that company's claim is incorrect. At the a= 0.05 level of significance, there is enough evidence to conclude that company's claim is correct.

A hot tub manufacturer advertises that with its heating equipment, a temperature of 100°F can be achieved on average in 15 minutes or less A random sample of 25 tubs is selected, and the time necessary to achieve a 100°F temperature is determined for each tub. The data appear to be normally distributed, and the sample mean time and sample standard deviation are 17.5 minutes and 5.2 minutes, respectively. Does this information cast doubt on the company's claim? Carry out a test of hypotheses using significance level 0.05. If the p-value is 0.012, what should our conclusion be? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b C At the a= 0.05 level of significance, there is enough evidence to conclude that company's claim is incorrect. At the a= 0.05 level of significance, there is not enough evidence to conclude that company's claim is incorrect. At the a= 0.05 level of significance, there is enough evidence to conclude that company's claim is correct.

MATLAB: An Introduction with Applications
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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A hot tub manufacturer advertises that with its heating equipment, a temperature of 100°F can be achieved on average in 15 minutes or less. A random sample of 25 tubs is selected, and the time necessary to achieve a 100°F temperature is determined for each tub. The data appear to be normally distributed, and the sample mean time and sample standard deviation are 17.5 minutes and 5.2 minutes, respectively. Does this information cast doubt on the company's claim? Carry out a test of hypotheses using significance level 0.05. If the p-value is 0.012, what should our conclusion be? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b C At the a At the a At the a - 0.05 level of significance, there is enough evidence to conclude that company's claim is incorrect. - = 0.05 level of significance, there is not enough evidence to conclude that company's claim is incorrect. = 0.05 level of significance, there is enough evidence to conclude that company's claim is correct.
Transcribed Image Text:A hot tub manufacturer advertises that with its heating equipment, a temperature of 100°F can be achieved on average in 15 minutes or less. A random sample of 25 tubs is selected, and the time necessary to achieve a 100°F temperature is determined for each tub. The data appear to be normally distributed, and the sample mean time and sample standard deviation are 17.5 minutes and 5.2 minutes, respectively. Does this information cast doubt on the company's claim? Carry out a test of hypotheses using significance level 0.05. If the p-value is 0.012, what should our conclusion be? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b C At the a At the a At the a - 0.05 level of significance, there is enough evidence to conclude that company's claim is incorrect. - = 0.05 level of significance, there is not enough evidence to conclude that company's claim is incorrect. = 0.05 level of significance, there is enough evidence to conclude that company's claim is correct.
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