The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with...

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The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with...

The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with mean 0.7 grams per mile and standard deviation 0.16 grams per mile .

(a) What sample size is needed so that the standard deviation of the sampling distribution is 0.01 grams per mile ?

(b) If a smaller sample is considered, the standard deviation for x¯ would be . (NOTE: Enter ''SMALLER'',''LARGER'' or ''THE SAME''.)

math Statistics-And-Probability

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