Question * For a certain type of computers, the length of time between charges of the battery is normally distributed with a mean of 50 hours and a standard deviation of 15 hours. John owns one of these computers and wants to know the probability that the length of time will be between 53 and 62 hours. 0.1156 0.4082 None of other answers is correct 0.2088
Added by Brendan M.
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To do this, we need to calculate the z-scores for the given values of 53 and 62. z1 = (53 - 50) / 15 = 0.2 z2 = (62 - 50) / 15 = 0.8 Show more…
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