Question

A new car that is a gas- and electric-powered hybrid has recently hit the market. The distance travelled on 1 gallon of fuel is normally distributed with a mean of 65 miles and a standard deviation of 7 miles. Find the probability of the following events:

A. The car travels more than 69 miles per gallon.

Probability =

B. The car travels less than 57 miles per gallon.

Probability =

C. The car travels between 60 and 69 miles per gallon.

Probability =

A sample of n=17n=17 observations is drawn from a normal population with μ=950μ=950 and σ=150σ=150. Find each of the following:

A. P(X¯>1004)

Probability =

P(X¯<880)

Probability =

C. P(X¯>920)

Probability =

Answer 1