Week 2, Homework 1

Answers to Week Two Homework Assignment ( Assignment 1) Chapter 7 effect 13 You should choose a seek pelage of g-force people. Although the law of bonnies tells you that the total of 1000 people is actu completelyy liable(predicate) to be close to 60 inches -- and thus under 65 inches mountainous -- here you atomic number 18 winning a see for each person over 65 inches tall, non when the fair of all the people is over 65 inches tall. Having a large sample will give you more chances at drawting the prize. The law of intermediates pertains to the variability of a sample average -- non variability in individual data values themselves. Here, we ar concerned with individual data values. Chapter 7 Exercise 18 No, we mass say we are quite convinced(p) that the average occupy is between $25 and $35 per hr -- tied(p) though there might not be some employees who realise in that affirm. For example, if the city only has low- gainful jobs and high paying jobs, t he average could fall between $25 and $35 per hour with fewer workers, or even none, actually earning in that range. Chapter 7 Exercise 23 If the bumdidates are nearly tied, that means the step erroneousness for the sample percentage would be the square rout out of (50×50/size of the sample). Since they want the margin of demerit to be affect to 1%, this means we would like the standard error to be follow to 0.5%.

This means 0.5 = square root of (50×50/size of the sample). solve for the size of the sample, sample size = (50/0.5) shape= 10,000 people. This is a very large sample. Chapter 8 Exercise 6 ( a) $300 to $700 is plus or minus twice the S! D for the population, and we can say that approximately 95 percent of all balances are in this range. (b) One aline answer to this part is as follows: We can say that we are 95 percent confident the average balance for all overdue bills is in the range from $480 to $520. Since the standard error SE for the sample mean should equal 100/square root of 100 = 10, the margin of error would be twice this value, or $20. This means $480...If you want to get a full essay, auberge it on our website: OrderCustomPaper.com

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