how do i answer these

Given population parameters for two populations, population 1 has a mean of 800 and a standard deviation equal to 20. Population 2 has a mean of 27,000 and a standard deviation equal to 2,000. Complete parts a and b below. a) Compute the coefficient of variation for each population. The coefficient of variation of population 1 is % . (Round to one decimal place as needed.)The branch manager for a bank has been asked to prepare a presentation for next week's board meeting. At the presentation, she will discuss the status of her branch's loans issued for recreation vehicles (RVs). In particular, she will analyze the loan balances for a sample of ten RV loans. The accompanying data were collected. Complete parts a through c below. $11,595 $8,124 $13,540 $17,061 $16,762 Ch $18,612 $4,942 $11,752 $16,759 $8,712 a. Compute the mean loan balance. The mean loan balance is $|:|. (Round to the nearest dollar as needed.) A random sample of 20 pledges to a public radio fundraiser 80 65 75 110 D. revealed the dollar pledges to the right. Complete parts a and b 95 40 95 30 below. 95 80 140 95 40 1 1O 85 50 65 65 40 65 a. Assume that the data set is a sample. Compute the range, variance, standard deviation, and interquartile range for the data set. The range for the data set is E. (Type an integer or a decimal.) The operations manager of a plant that manufactures tires wants to compare the actual inner diameters of two grades of tires, each of which is expected to be 575 millimeters. Samples of ve tires from each grade were selected, and the results representing the inner diameters of the tires, ranked from smallest to largest, are shown below. Complete parts (a) through (c) below. Grade X Grade Y :1- 563 570 575 583 586 572 574 575 578 580 a. For each of the two grades of tires, compute the mean, median, and standard deviation. The mean for Grade X is D mm. (Type an integer or a decimal.)