A random sample of n = 755 US cell phone users age 18 and older in May 2011 found that the average number of text messages sent or received per day is 41.5 messages, with standard error about 6.1. 1Smith, A., "Americans and Text Messaging," Pew Research Center, http://www.pewinternet.org/Reports/2011/Cell-Phone-Texting- 2011/Main-Report/How-Americans-Use-Text-Messaging.aspx, accessed September 19, 2011. Your answer is incorrect. (a) Use the information from the sample to give the best estimate of the population parameter. i eTextbook and Media Hint Your answer is incorrect. (b) Find a 95% confidence interval for the mean number of text messages. to The 95 % confidence interval is 70F Sunny

A random sample of n = 755 US cell phone users age 18 and older in May 2011 found that the average number of text messages sent or received per day is 41.5 messages, with standard error about 6.1. 1Smith, A., "Americans and Text Messaging," Pew Research Center, http://www.pewinternet.org/Reports/2011/Cell-Phone-Texting- 2011/Main-Report/How-Americans-Use-Text-Messaging.aspx, accessed September 19, 2011. Your answer is incorrect. (a) Use the information from the sample to give the best estimate of the population parameter. i eTextbook and Media Hint Your answer is incorrect. (b) Find a 95% confidence interval for the mean number of text messages. to The 95 % confidence interval is 70F Sunny

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 7PPS

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