# Question: A population has a mean of 200 and a standard

A population has a mean of 200 and a standard deviation of 50.Asimple random sample of size 100 will be taken and the sample mean will be used to estimate the population mean.

a. What is the expected value of x-bar?

b. What is the standard deviation of x-bar?

c. Show the sampling distribution of x-bar.

d. What does the sampling distribution of show?

a. What is the expected value of x-bar?

b. What is the standard deviation of x-bar?

c. Show the sampling distribution of x-bar.

d. What does the sampling distribution of show?

## Answer to relevant Questions

A population has a mean of 200 and a standard deviation of 50. Suppose a simple random sample of size 100 is selected and is used to estimate μ. a. What is the probability that the sample mean will be within 5 of the ...The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in northern Kentucky (The Cincinnati Enquirer, January 21, 2006). Use this price as the population mean, and assume the population standard ...About 28% of private companies are owned by women (The Cincinnati Enquirer, January 26, 2006). Answer the following questions based on a sample of 240 private companies. a. Show the sampling distribution of p-bar, the sample ...The average cost of a gallon of unleaded gasoline in Greater Cincinnati was reported to be $2.41 (The Cincinnati Enquirer, February 3, 2006). During periods of rapidly changing prices, the newspaper samples service stations ...US Airways conducted a number of studies that indicated a substantial savings could be obtained by encouraging Dividend Miles frequent flyer customers to redeem miles and schedule award flights online (US Airways Attaché, ...Post your question