Posted by Anonymous on Monday, April 30, 2012 at 7:27pm.
6% of american drivers read the newspaper while driving if 300 drivers are selected at random find the probability that between 15 and 25 say they read while driving

Stat  MathGuru, Tuesday, May 1, 2012 at 6:19pm
Mean = np = 300 * .06 = ?
Standard deviation = √npq = √(300 * .06 * .94) = ? (Note: q = 1  p)
Once you have calculated mean and standard deviation, use zscores to find the probability.
z = (x  mean)/sd
Find two zscores, using 15 for x and then using 25 for x.
Once you find the zscores, use a ztable to find the probability between the two scores.
I hope this will help get you started.
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