answer all questions please!!! The mean gas mileage for a hybrid car is 56 miles per...

answer all questions please!!!

The mean gas mileage for a hybrid car is

miles per gallon. Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of

3.2

miles per gallon. (a) What proportion of hybrids gets over

miles per gallon? (b) What proportion of hybrids gets

miles per gallon or less?

left parenthesis c right parenthesis What(c) What

proportion of hybrids gets between

and

miles per gallon? (d) What is the probability that a randomly selected hybrid gets less than

miles per gallon?

Click the icon to view a table of areas under the normal curve.

(a) The proportion of hybrids that gets over

miles per gallon is

nothing.

(Round to four decimal places as needed.)

Solutions

Expert Solution

Answer a) The proportion of hybrids gets over 62 is 0.0304

Answer b) The proportion of hybrids gets 52 miles per gallon or less is 0.1056

Answer c) The proportion of hybrids gets between 58 and 62 miles per gallon is 0.2356

Answer d) The probability that a randomly selected hybrid gets less than 45 miles per gallon is 0.0003

orchestra answered 1 year ago

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