A survey was conducted to measure the number of hours per weekadults in the Unit

Question

A survey was conducted to measure the number of hours per weekadults in the United States spend on home computers. In the survey,the number of hours were normally distributed, with a mean of 7hours and a standard deviation of 1 hour. A survey participant israndomly selected. a.) Need to find the probability that the hours spent on thehome computer, by the participant, are less than 5 hours perweek. b.) Need to find the probability that the hours spent on homecomputer are between 5.5 and 9.5 hours per week. c.) Need to find the probability that the hours spent on homecomputer are more than 10 hours per week. A survey was conducted to measure the number of hours per weekadults in the United States spend on home computers. In the survey,the number of hours were normally distributed, with a mean of 7hours and a standard deviation of 1 hour. A survey participant israndomly selected. a.) Need to find the probability that the hours spent on thehome computer, by the participant, are less than 5 hours perweek. b.) Need to find the probability that the hours spent on homecomputer are between 5.5 and 9.5 hours per week. c.) Need to find the probability that the hours spent on homecomputer are more than 10 hours per week.

Explanation / Answer

Usehttp://www.stat.tamu.edu/~west/applets/normaldemo.htmlto find normal probability Let X be the number of hours spent on the home computer X~Normal(7,12) a) P(X < 5) = 0.0228 b) P( 9.5>X>5.5) = P(X 10) = 0.0013 Hope this helps!

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