Two brands of car batteries, both carrying 6 year warranties,were samp...

Two brands of carâ€‹ batteries, both carryingâ€‹ 6-year warranties, were sampled and tested under controlled conditions....

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Two brands of carâ€‹ batteries, both carryingâ€‹ 6-year warranties,were sampled and tested under controlled conditions. Five of eachbrand failed after the number of months shown. Calculate â€‹a) bothsample means and â€‹b) both sample standard deviations. Decide â€‹c)which brand battery lasts longer and â€‹d) which brand has the moreconsistent lifetime. Brandâ€‹ A: 68â€‹, 69â€‹, 76â€‹, 76â€‹, 73 Brandâ€‹ B:61â€‹, 69â€‹, 68â€‹, 67â€‹, 61
What are the sampleâ€‹ means?A B
What are the sample standardâ€‹ deviations? SA SB
Which brand battery apparently lastsâ€‹ longer?BRAND A OR B
Which brand battery has the more consistentâ€‹ 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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