Homework Help: statistics

Posted by lindsay on Monday, November 7, 2011 at 1:50pm.

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.

statistics - PsyDAG, Tuesday, November 8, 2011 at 11:05am
Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to your Z scores.

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