Students at a community college spend an average of $650 a semester on books with a standard deviation of $120. A random sample of 64 students is selected from this population.
a. Calculate the standard deviation of the sampling distribution.
b. Calculate the probability that this sample will have a mean that is within $25 of the population mean.
c. Recalculate the answer to (a) assuming that the sample size is 64 and the population size is 1,000.
d. Recalculate the answer to (b) assuming that the sample size is 64 and the population size is 1,000.
Answers
Answered by
1
Answer:
Students at a community college spend an average of $650 a semester on books with a standard deviation of $120. A random sample of 64 students is selected from this population.
a. Calculate the standard deviation of the sampling distribution.
b. Calculate the probability that this sample will have a mean that is within $25 of the population mean.
c. Recalculate the answer to (a) assuming that the sample size is 64 and the population size is 1,000.
d. Recalculate the answer to (b) assuming that the sample size is 64 and the population size is 1,000.
Similar questions