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Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 6.5 - Problem 11
Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 6.5 - Problem 11

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# The National Opinion Research Center polled a sample of 92 people aged 1822 in the year ISBN: 9780073401331 38

## Solution for problem 11 Chapter 6.5

Statistics for Engineers and Scientists | 4th Edition

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Problem 11

The National Opinion Research Center polled a sample of 92 people aged 1822 in the year 2002, asking them how many hours per week they spent on the internet. The sample mean was 7.38, with a sample standard deviation of 12.83. A second sample of 123 people aged 1822 was taken in the year 2004. For this sample, the mean was 8.20 with a standard deviation of 9.84. Can you conclude that the mean number of hours per week increased between 2002 and 2004?

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Statistics: Ch. 1 Important Definitions • Statistics—Numerical description of data • Population—A set of all subjects or elements about which we are interested in making inferences • Frame—A list containing all members of a population o Very expensive to make, would just be names • Census—Data that’s gathered from the entire population o Things like average income, number of children et cetera • Parameters—Population parameters are facts abo

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##### ISBN: 9780073401331

Since the solution to 11 from 6.5 chapter was answered, more than 231 students have viewed the full step-by-step answer. This full solution covers the following key subjects: . This expansive textbook survival guide covers 153 chapters, and 2440 solutions. Statistics for Engineers and Scientists was written by and is associated to the ISBN: 9780073401331. The answer to “The National Opinion Research Center polled a sample of 92 people aged 1822 in the year 2002, asking them how many hours per week they spent on the internet. The sample mean was 7.38, with a sample standard deviation of 12.83. A second sample of 123 people aged 1822 was taken in the year 2004. For this sample, the mean was 8.20 with a standard deviation of 9.84. Can you conclude that the mean number of hours per week increased between 2002 and 2004?” is broken down into a number of easy to follow steps, and 84 words. The full step-by-step solution to problem: 11 from chapter: 6.5 was answered by , our top Statistics solution expert on 06/28/17, 11:15AM. This textbook survival guide was created for the textbook: Statistics for Engineers and Scientists , edition: 4.

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