Friday

July 25, 2014

July 25, 2014

Posted by **Laynette** on Friday, September 2, 2011 at 9:42pm.

(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 10:07pmA. 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 the Z score.

B. Same process except that, instead of SD, you use SEm = SD/√n

- statistics -
**denise**, Monday, September 19, 2011 at 7:39pmonce 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)

**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 diameters of a wooden dowel produced by a new machine are ...

statistics - Assume that the population of heights of male college students is ...

Statistics - The amount of rainfall in January in a certain city is normally ...

Statistics - The distribution of a sample of the outside diameters of PVC gas ...

statistics - The annual precipitation amounts in a certain mountain range are ...

math - The diameters of a wooden dowel produced by a new machine are normally ...

Statistics - Assuming that the heights of college women are normally distributed...