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Two brands of car​ batteries, both carrying​ 6-year warranties, were sampled and tested under controlled conditions....

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Statistics

Two brands of car​ batteries, both carrying​ 6-year warranties,were sampled and tested under controlled conditions. Five of eachbrand failed after the number of months shown. Calculate ​a) bothsample means and ​b) both sample standard deviations. Decide ​c)which brand battery lasts longer and ​d) which brand has the moreconsistent lifetime. Brand​ A: 68​, 69​, 76​, 76​, 73 Brand​ B:61​, 69​, 68​, 67​, 61

What are the sample​ means?A B

What are the sample standard​ deviations? SA SB

Which brand battery apparently lasts​ longer?BRAND A OR B

Which brand battery has the more consistent​ lifetime?BRAND A ORB

Answer & Explanation Solved by verified expert
4.2 Ratings (947 Votes)
The sample size is n 5 The provided sample data along withthe data required to compute the sample mean and sample varianceare shown in the table    See Answer
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