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Tire lifetime:the lifetime of a certain type of automobile tire(in thousands of moles) is normally distributed...

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Basic Math

Tire lifetime:the lifetime of a certain type of automobiletire(in thousands of moles) is normally distributed with mean u=41and standard deviation o=4 What is the probability that a radonchosen tire has lifetime greater than 50 thousand miles? Whatproportion of tires have lifetime between 36 and 45 thousand milesWhat proportion of tires have lifetimes less than 46 thousandmiles? Round answers at least 4 places

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Let X Lifetime of a automobile tire have normal distributionwith mean andstandard deviation a Probability that a random chosen tire haslifetime greater than 50 that is PX 50Covert the given X into z score the formula of z score isThe z score    See Answer
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