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18 January, 07:37

The life of a certain brand of battery is normally distributed, with mean 128 hours and standard deviation 16 hours. what is the probability that a battery you buy lasts at most 100 hours? standardize the variable. x = 100 is equivalent to z =

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  1. 18 January, 08:02
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    Question 1 is C: - 1.75

    Question 2 is D: 1 - P (z £ 1.75)

    Question 3 is A: 4%
  2. 18 January, 11:12
    0
    X=100 is equivalent to z=-1.75
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