Please help with the last three I need. I am having so much trouble. Answer the

Question

Please help with the last three I need. I am having so much trouble.

Answer the question True or False The standard error of the sampling distribution of the sample mean is equal to , the standard deviation of the population. True False QUESTION 5 Solve the problem. The weight of corn chips dispensed into a 15-ounce bag by the dispensing machine has been identified as possessing a normal distribution with a mean of 15.5 ounces and a standard deviation of 0.5 ounce. Suppose 100 bags of chips are randomly selected. Find the probability that the mean weight of these 100 bags exceeds 15.6 ounces. approximately 0 .0228 6915 QUESTION 6 Answer the question True or False The mean of a sampling distribution is not equal to the population mean True False

Explanation / Answer

1. False, for the sample it is sd/sqrt(N) i,e standard deviation of population divided by square root of the sample size

2. Mean is 15.5 and standard error is 0.5/sqrt(100)=0.05

We need to find P(x>15.6)= P(z>(15.6-15.5)/0.05)=P(z>2) or 1-P(z<2) , from normal distribution table we get 1-0.9772 =0.0228. option B

3. Means of both population and sample are same. so option FALSE is correct here

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