# HW #4 - 7.22-7.25(2 pts Each 7.22 a.20.10.10 =.40...

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Name: Recitation Day/Time: STAT1100-Homework 4 Due in recitation the week of 25 points You are encouraged to use Excel as a tool to complete your homework assignment. If you need extra help with Microsoft Excel, you will find links on Courseweb under “External Links”. You will see next to the problem number in the text the name of the data file for that problem. Please be sure to include your output with your homework with the question number and answer identified on all output. 1. (7 pts.) Case 6.3 0 Outs: .39, no 1 Out: .26, no 2 Outs: .13, no 2. Chapter 7:
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Unformatted text preview: 7.22-7.25 (2 pts. Each) 7.22 a.) .20 + .10 + .10 = .40 b.) .15 + .15 + .25 + .20 + .10 + .10 = .95 7.23 Mean: 4 Variance: (1-4) 2 + (2-4) 2 + (3-4) 2 + (4-4) 2 + (5-4) 2 + (6-4) 2 + (7-4 ) 2 = 28 = 4.7 7-1 6 7.24 cE(X)= .0125 + .075 + .1125 + .25 + .25 + .15 + .175 = 1.025 V(cX)= c 2 V(x) = .168 7.25 a.) b.) c.) (5 pts) 7.57, 7.95, 7.119 7.57 cE(X)= 65 days V(cX)= 21 7.95 a.) 0.858 b.) 0.259 c.) 0.929 d.) 0.122 7.119 a.) 0.018 b.) 0.553 Bonus 2 points: problem 6.103 6.103 The probability that the other coin is also tales, is .5 or 50%...
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