Posted by Laynette on Friday, September 2, 2011 at 9:42pm.
The diameters of apples in a certain orchard are normally distributed with a mean of 4.77 inches and a standard deviation of 0.43 inches. Show all work.
(A) What percentage of the apples in this orchard is larger than 4.71 inches?
(B) A random sample of 100 apples is gathered and the mean diameter is calculated. What is the probability that the sample mean is greater than 4.71 inches?

statistics  PsyDAG, Friday, September 2, 2011 at 10:07pm
A. Z = (scoremean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score.
B. Same process except that, instead of SD, you use SEm = SD/√n

statistics  denise, Monday, September 19, 2011 at 7:39pm
once again I am not getting this.
assume that the population of heights of male college students is normally distibuted with a mean of 69.09 and standard deviation of 4.71. A random sample of 92 heights is obtained. find the mean and standard error of the x distribution.
find P(x>68.5)
Answer This Question
Related Questions
 statistics  The diameters of apples in a certain orchard are normally ...
 statistics  The diameters of grapefruits in a certain orchard are normally ...
 Math  The diameters of grapefruits in a certain orchard are normally ...
 statistics  the diameter of red apples of an orchard have a normal distribution...
 Math  The diameters of bolts produced by a certain machine are normally ...
 Elementary Statistics  The diameters of pencils produced by a certain machine ...
 Math Assignment Due  Please help me, it would be greatly appreciated. 1.) A ...
 Statistics  The diameters of a wooden dowel produced by a new machine are ...
 Statistics  Assuming that the heights of college women are normally distributed...
 Statistics  Assuming that the heights of college women are normally distributed...
More Related Questions