io x WileyPLUS xG Chapter 5, Section 5.4 CX re https://edugen.wileyplus.com/edug
ID: 3064938 • Letter: I
Question
io x WileyPLUS xG Chapter 5, Section 5.4 CX re https://edugen.wileyplus.com/edugen/lti/main.uni Watkins, Statistics: From Data to Decision, 2e :08:47 PM/Remaining 46 min Chapter 6, Section 6.2, Question P15 The amount you save varies from week to week, but averages $45 with a standard deviation of $10. a. What is the expected amount you would save in a year (52 weeks)? What is the standard deviation of your yearly savings? Expected value- Standard deviation- Round the answer to the nearest cent b. If your grandmother adds $20 a week to your savings, what is the expected amount that you would save in a year? Expected value- What is the standard deviation? Standard deviation . Round the answer to the nearest cent. MapleNvetExplanation / Answer
Answer to the question is as follows:
a.
Average = 45
Stdev = 10
a. In a year, E(X) = $45*52 = $2340
Stdev(X) = 10*52^2 = 27040
b. E(X) = 45*52 + 20*45 = $3240
Stdev(X) = = 10*52^2 = 27040
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