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A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from
asked by avery on June 26, 2013 
statistics
A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from
asked by avery on June 26, 2013 
statistics
A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from
asked by avery on June 26, 2013 
statistics
A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from
asked by avery on June 26, 2013 
algebra college level
it says y=16x+181 represents number of students in class where x represents number of hours study required weekly. what is rate of change of number of students in class to number of hours study
asked by azima on April 24, 2012 
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The weekly study times for all students in a school are normally distributed with μ = 18 hours and σ = 6 hours. If 36 students are randomly selected, find the probability that their mean study time is greater than 20 hours. My
asked by Judy on September 15, 2016 
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A statistician wants to estimate the mean weekly family expenditure on clothes. He believes that the standard deviation of the weekly expenditure is $125. Determine with 99% confidence the number of families that must be sampled
asked by sarah on January 16, 2013 
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the least common multiple of 3, 6,9 i say 18 Sheila practiced hours Monday, hours Tuesday, and hours Wednesday. What is the total number of hours that she practiced? A) hours B) hours C) hours D) 6 hours Complete the statement,
asked by dawn on June 26, 2008 
Statistics & Probability
A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard
asked by Alia on January 11, 2013 
Statistics & Probability
A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard
asked by Alia on January 11, 2013