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2. A car manufacturer claims that the gas mileage of a certain model of their car has a standard deviation of 5 km/L. A random sample of 64 cars of this model has been chosen and found to have a mean gas mileage of 27.5 km/L. At a 5% significance level, is the manufacturer’s claim true?​

Sagot :

Ronanjesu24go

Answer:

true

Step-by-step explanation:

5×5=25

25×2=50

50-23.95=27.5

Sana makatolon :)(:

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