gnments/10775418submit lewis connolly& MA120- U1A2018- DLC- Basic Concepts of St
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Question
gnments/10775418submit lewis connolly& MA120- U1A2018- DLC- Basic Concepts of Statistics Quiz: Unit 7: Quiz This Question: 2 pts Time Remaining: 01:39.57 Submit Quiz 1 of 13 (0 complete) This Quiz: 20 pts possible use were observed and the duration times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a sin e random sample use the data to construct a 99% confidence interval estimate of L the mean duration of game play Twelve different video games showing s 4040 3878 3863 4029 4318 4815 4665 4042 5003 4821 4332 4308 2 tandard ormal distrbution tb What is the confidence interval estimate of the population mean ?? CHExplanation / Answer
Solution :
Given data 4040 , 3878 , 3863 , 4029 , 4318 , 4815 , 4665 , 4042 , 5003 , 4821 , 4332 , 4308
=> mean x-bar = 4342.8333 , standard deviation s = 395.4461 , n = 12
=> df = n-1 = 11
=> for 99% confidence interval , t = 3.106
=> The 99% confidence interval of the population mean is x-bar +/- t*s/sqrt(n)
=> 4342.8333 +/- 3.106*395.4461/sqrt(12)
=> 3988.3 < ? < 4697.4 (rounded)
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