chapter 8 question 11 suppose a simple random sample size of size n= 15 is obtained from a population with u=61 and q=14. The population must be normally distributed the sampling distribution of xbar...

chapter 8 question 11

suppose a simple random sample size of size n= 15 is obtained from a population with u=61 and q=14.

The population must be normally distributed

the sampling distribution of xbar is normal with ux= 61 and q = 14 over the square root of 15.

B.  P(xbar less than 64.6 assuming the normal model.

assuming the normal model, p(x greater than or equal to 63.2