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A promising start-up wants to compete in the cell phone market. The start-up believes that the battery life of its cell phone is more than two hours longer than that of the leading product. A recent sample of 120 units of the leading product provides a mean battery life of 6 hours and 30 minutes with a standard deviation of 16 minutes. A similar analysis of 92 units of the start-up's product results in a mean battery life of 8 hours and 53 minutes and a standard deviation of 35 minutes. It is not reasonable to assume that the population variances of the two products are equal. All times are converted into minutes. Let new products and leading products represent population 1 and population 2, respectively. b-1. Calculate the value of the test statistic. Note: Round all intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.

A promising start-up wants to compete in the cell phone market. The start-up believes that the battery life of its cell phone is more than two hours longer than that of the leading product. A recent sample of 120 units of the leading product provides a mean battery life of 6 hours and 30 minutes with a standard deviation of 16 minutes. A similar analysis of 92 units of the start-up's product results in a mean battery life of 8 hours and 53 minutes and a standard deviation of 35 minutes. It is not reasonable to assume that the population variances of the two products are equal. All times are converted into minutes. Let new products and leading products represent population 1 and population 2, respectively. b-1. Calculate the value of the test statistic. Note: Round all intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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A promising start-up wants to compete in the cell phone market. The start-up believes that the battery life of its cell phone is more than two hours longer than that of the leading product. A recent sample of 120 units of the leading product provides a mean battery life of 6 hours and 30 minutes with a standard deviation of 16 minutes. A similar analysis of 92 units of the start-up's product results in a mean battery life of 8 hours and 53 minutes and a standard deviation of 35 minutes. It is not reasonable to assume that the population variances of the two products are equal. All times are converted into minutes. Let new products and leading products represent population 1 and population 2, respectively. b-1. Calculate the value of the test statistic. Note: Round all intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.
Transcribed Image Text:A promising start-up wants to compete in the cell phone market. The start-up believes that the battery life of its cell phone is more than two hours longer than that of the leading product. A recent sample of 120 units of the leading product provides a mean battery life of 6 hours and 30 minutes with a standard deviation of 16 minutes. A similar analysis of 92 units of the start-up's product results in a mean battery life of 8 hours and 53 minutes and a standard deviation of 35 minutes. It is not reasonable to assume that the population variances of the two products are equal. All times are converted into minutes. Let new products and leading products represent population 1 and population 2, respectively. b-1. Calculate the value of the test statistic. Note: Round all intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.
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