Statistica.com reported in 2014 that the mean number of Facebook friends for 18- to 24-year olds is

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Statistica.com reported in 2014 that the mean number of Facebook friends for 18- to 24-year olds is 649. Assume the distribution is normal with =649 friends and standard deviation =150 friends.

Find the probability that a randomly selected Facebook user has the following number of friends:

Fewer than 424 friends.

More than 949 friends.

Between 424 and 949 friends.

Find the number of Facebook friends that represents the 75th percentile.

One particular Facebook user has 1174 friends. Is this unusual? On what do you base your answer?

Related Book For answer-question

Mathematical Applications for the Management, Life and Social Sciences

ISBN: 9781337625340

12th edition

Authors: Ronald J. Harshbarger, James J. Reynolds

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Posted Date: May 12, 2022 01:32 AM

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Statistica.com reported in 2014 that the mean number of Facebook friends for 18- to 24-year olds is

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Solution Given that mean mu 649 standard deviation sigma 1... View the full answer

Mathematical Applications for the Management, Life and Social Sciences

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