MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Concept explainers

Estimation
A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.
Question

A web site reported in 2018 that 47% of all web traffic comes from laptops and desktops. Based on a random sample of 11 households was selected. 

a) what is the probability that exactly two households used a laptop or desktop to access the web? 

b) what is the probability that less than three households used a laptop or desktop to access the web? 

c) what is the probability that more than five households used a laptop or desktop to access the web? 

d) what are the mean and standard deviation for this distribution? 

-the mean for this distribution is ___. 

-the standard deviation for this distribution is ___. 

 

Please help! A previous question like this was answered half wrong. Thank you! 

A Web site reported in 2018 that 47% of all Web traffic comes from laptops and desktops. Complete parts a through d below based on if a random sample of 11 households was selected. a. What is the probability that exactly two households used a laptop or desktop to access the web? The probability is (Round to four decimal places as needed.) b. What is the probability that less than three households used a laptop or desktop to access the web? The probability is (Round to four decimal places as needed.) c. What is the probability that more than five households used a laptop or desktop to access the web? The probability is (Round to four decimal places as needed.) d. What are the mean and standard deviation for this distribution? The mean for this distribution is (Type an integer or a decimal. Do not round.) The standard deviation for this distribution is (Round to four decimal places as needed.)
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Transcribed Image Text:A Web site reported in 2018 that 47% of all Web traffic comes from laptops and desktops. Complete parts a through d below based on if a random sample of 11 households was selected. a. What is the probability that exactly two households used a laptop or desktop to access the web? The probability is (Round to four decimal places as needed.) b. What is the probability that less than three households used a laptop or desktop to access the web? The probability is (Round to four decimal places as needed.) c. What is the probability that more than five households used a laptop or desktop to access the web? The probability is (Round to four decimal places as needed.) d. What are the mean and standard deviation for this distribution? The mean for this distribution is (Type an integer or a decimal. Do not round.) The standard deviation for this distribution is (Round to four decimal places as needed.)
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