SOLUTION: A survey was conducted to measure the number of hours per week adults spend on home computers. In the survey, the number of hours was normally distributed, with a mean of 8 hours a

Question 955924: A survey was conducted to measure the number of hours per week adults spend on home computers. In the survey, the number of hours was normally distributed, with a mean of 8 hours and a standard deviation of 1 hour. A survey participant is randomly selected. Find the probability that the hours spent on the home computer by the participant are between 5.5 and 9.5 hours per week.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A survey was conducted to measure the number of hours per week adults spend on home computers. In the survey, the number of hours was normally distributed, with a mean of 8 hours and a standard deviation of 1 hour. A survey participant is randomly selected. Find the probability that the hours spent on the home computer by the participant are between 5.5 and 9.5 hours per week.
----------------------
z(5.5) = (5.5-8)/1 = -2.5
z(9.5) = (9.5-8)/1 = 1.5
----
P(5.5< x < 9.5) = P(-2.5< z < 1.5) = normalcdf(-2.5,1.5) = 0.2417
---------------
cheers,
Stan H.
-------------

RELATED QUESTIONS
A survey of college students was conducted during final exam week to assess the number of (answered by amarjeeth123)

in a certain survey of 1,004 adults, 83% reported having more than one television at... (answered by edjones)

A survey was conducted to determine whether people were connected to the internet at... (answered by macston)

A survey of college students was conducted during final exam week to assess the number of (answered by Boreal)

A survey is being planned to determine the mean amount of time children under 6 spend... (answered by Theo)

a) American households spent an average of about $52 in 2007 on Halloween merchandise... (answered by Theo)

I NEED HELP IN STATISTICS. PLEASE HELP. THANK YOU SO MUCH. Quality Polls contends... (answered by stanbon)

) According to a certain survey, adults spend 2.45 2.45 hours per day watching... (answered by Boreal)

A survey was conducted on a group of students asking their favourite colour of the... (answered by jim_thompson5910,solver91311)