The 22,000 students at NCC have mean mileage on their vehicles of µ = 54,000 miles...

The 22,000 students at NCC have mean mileage on their vehicles of µ = 54,000 miles

       with a standard deviation of s = 3,125 miles. Assuming a normal distribution

   a) what is the probability that a randomly selected student has a car with mileage between 55,000
           and 60,000 miles?

b) what percent of student vehicles have mileage above 60,000 miles?

c) how many students have cars with mileage below 50,000?

Expert Solution

(a)

(b)

(c)

Number of students have cars with mileage below 50,000 is

22000 * 0.1003 = 2206.6

Answer: 2207

orchestra answered 1 year ago

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