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Two companies market new batteries targeted at owners of personal music players. Dura Tunes claims a...

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Question

Basic Math

  1. Two companies market new batteries targeted at owners ofpersonal music players. Dura Tunes claims a mean battery life of 11hours, while RockReady advertises 12 hours.

a. Explain why you would also like to know the standarddeviations of the battery lifespans before deciding which brand tobuy.

b. Suppose the standard deviations are 2 hours for DuraTunes and1.5 hours for RockReady. You are headed for 8 hours at the beach.Which battery is most likely to last all day? Explain.

PLEASE SHOW ALL WORK AND RATIONALE.

TYPED WORK ONLY PLEASE

NO HANDWRITTEN.

Answer & Explanation Solved by verified expert
4.4 Ratings (954 Votes)
A We would like to know the standard deviations of the batterylifespans before deciding which brand to buy because standarddeviation helps us in knowing the minimum and maximum battery lifedepending upon the different    See Answer
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