A random sample of 20 pledges to a public radio fundraiser revealed the dollar pledges to the right. Complete parts a and b 125 150 below. 95 82892 125 85 50 50 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 110 [Type an integer or a decimal.) The sample variance, s , is 857 63 (Round to two decimal places as needed.) The sample standard deviation, s, is 29.29 . (Round to two decimal places as needed.] The interquartile range for the data set is. (Type an integer or a decimal.}