These are all statistics questions:

Please show work in excel so that I can see how you got your answer and apply to other problems

3.

Sales volume last weekend for four samples, each consisting of ve car dealerships, were as fellows: What is le mean of the distribution of sample means? Please round your answer to the nearest tenth. Note that the correct answer will be evaluated based on the fullprecision result you would obtain using Excel. Sales volume last weekend for four samples, each consisting of ve car dealerships, were as follows: What is the standard deviation thhE distribution of sample means? Please round your arswer to the nearest tenth. Note that the porrezt answer will be evaluated based on the fullprecision result yrs-u would obtain using Excel. The mean is 32.1 and the standard deviation is 8.3 for a population. Using the Central Limit Theorem, what is the variance of the distribution of sample means for samples of size 50? Please round 1vour answer to the nearest tenth. Note that the oorreot answer will be evaluated based on die fullprecision result vou would obtain using Excel. Suppose your marl-teting colleague used a known population mean and standard deviation to compute the standard error as 56.4 for samples of a particular size. You don't know the particular sample size but your colleague told you that the sample size is greater than zo. Your boss asks what the standard error would be if 1you triple the sample size. [} What is the standard error for the new sample size? Please round 1your answer to the nearest tenth. Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel