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The daily amount of time people spend on social media is normally distributed with mean u = 145 minutes and standard deviation of o = 20 minutes. If we select a social media user at random, what is the probability that this person spends- less than 90 minutes on social media in a day? 3 If we select 100 social media users at random and record the daily amount of time they spend on social media, what is the probability that their sample mean exceeds 148 minutes?

The daily amount of time people spend on social media is normally distributed with mean u = 145 minutes and standard deviation of o = 20 minutes. If we select a social media user at random, what is the probability that this person spends- less than 90 minutes on social media in a day? 3 If we select 100 social media users at random and record the daily amount of time they spend on social media, what is the probability that their sample mean exceeds 148 minutes?

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The daily amount of time people spend on social media is normally distributed with mean u= 145 minutes and standard deviation of o = 20 minutes. If we select a social media user at random, what is the probability that this person spends less than 90 minutes on social media in a day? 3 If we select 100 social media users at random and record the daily amount of time they spend on social media, what is the probability that their sample mean exceeds 148 minutes?
Transcribed Image Text:The daily amount of time people spend on social media is normally distributed with mean u= 145 minutes and standard deviation of o = 20 minutes. If we select a social media user at random, what is the probability that this person spends less than 90 minutes on social media in a day? 3 If we select 100 social media users at random and record the daily amount of time they spend on social media, what is the probability that their sample mean exceeds 148 minutes?
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