Question
Assume that the number of websites visited per month by smartphone owners is normally distributed with an average of 30 and standard deviation of 11.
Assume that the number of websites visited per month by smartphone owners is normally distributed with an average of 30 and standard deviation of 11.
What is the probabilitya smartphone ownervisits more than 40 websites?
Suppose the proportion of female workers in a company is 0.35
If we take a sample of 40 workers from this company, what is the probability that thesample proportionis greater than 0.50
number of websites visited per month by smartphone owners is normally distributed with an average of 30 and standard deviation of 11.
If we take a random sample of 20 smartphone owners, what is the probability that thesample meansis less than 35?
Assume that the number of websites visited per month by smartphone owners is normally distributed with an average of 30 and standard deviation of 11.
What is the standard deviation ofsample means?
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Mathematical Interest Theory
Authors: Leslie Jane, James Daniel, Federer Vaaler
3rd Edition
147046568X, 978-1470465681
