Posted by kinshassa on Friday, July 22, 2011 at 1:15pm.
The height of 18yearold men are approximately normally distributed, with mean of 68 inches and a standard deviation of 3 inches. What is the probability that an 18yearold man selected at random is between 67 and 69 inches tall? Round your answer to the nearest thousandths place (3 places).

statistics  MathGuru, Friday, July 22, 2011 at 7:04pm
Use zscores and a ztable to find your probability.
Formula:
z = (x  mean)/sd
mean = 68
sd = 3
Find two zvalues, using 67 and 69 for x.
Next, check a ztable for the probability between the two zscores.
I hope this will help get you started.
Answer This Question
Related Questions
 Statistics  The heights of 18 year old men are approximately normally ...
 Statistics  Suppose the heights of 18yearold men are approximately normally ...
 Statistics  The heights of 18yearold men are approximately normally ...
 statistics  The distribution of heights of American women aged 18 to 24 is ...
 statistics  The heights of 10000 individuals are approximately normally ...
 statistics  The heights of 10000 individuals are approximately normally ...
 Statistics  A simple random sample of 50 female 14yearolds is selected. The ...
 Statistics Please help me :(  I have no idea where to even start. Suppose ...
 Statistics  The distribution of heights of American women aged 18 to 24 is ...
 Statistics  In a murder trial in Los Angeles, a shoe expert stated that the ...
More Related Questions