Math 245 Written Homework 5 Due 5/23 Name: 1. Knowing the measures of central tendency (mean, median, mode) and the measures of dispersion (range, standard deviation) of a data set gives us a more complete view of the nature of the data. The following situations give only a single measure (the mean). Discuss how your view of the situation might change if you also knew the size of the standard deviation. Be creative. Explain the situation with a small standard deviation and then with a large standard deviation. (a) The mean monthly rainfall in Waco, Texas is 2.51 inches. with a small standard deviation: with a large standard deviation: (b) The average grade on the test last week was 70%. with a small standard deviation: with a large standard deviation: (c) ”But, officer, I was averaging 65 miles per hour.” with a small standard deviation: with a large standard deviation: 2. Let X be a random variable with the following probability distribution: x P(x) 1 .16 3 .34 7 .05 8 .08 17 .1 19 .27 (a) Calculate the mean E(X). (b) Calculate the variance, V ar(X) and the standard deviation. (c) Calculate E(55X + 200). (d) (Bonus) Calculate V ar(−5X + 201).

AccountingQueen

(3)

Status NEW Posted 19 Aug 2017 06:08 AM My Price 8.00

Hel-----------lo -----------Sir-----------/Ma-----------dam----------- T-----------han-----------k y-----------ou -----------for----------- us-----------ing----------- ou-----------r w-----------ebs-----------ite----------- an-----------d a-----------cqu-----------isi-----------tio-----------n o-----------f m-----------y p-----------ost-----------ed -----------sol-----------uti-----------on.----------- Pl-----------eas-----------e p-----------ing----------- me----------- on----------- ch-----------at -----------I a-----------m o-----------nli-----------ne -----------or -----------inb-----------ox -----------me -----------a m-----------ess-----------age----------- I -----------wil-----------l

Not Rated(0)

• Buy Answer