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Nitella [24]
3 years ago
8

The miles-per-gallon obtained by the 1995 model Z cars is normally distributed with a mean of 22 miles-per-gallon and a standard

deviation of 5 miles-per-gallon. What is the probability that a car will get less than 21 miles-per-gallon?
Mathematics
1 answer:
AlekseyPX3 years ago
4 0

Answer:

0.42074

Step-by-step explanation:

In this question, we are asked to calculate the probability that a car will get less than 21 miles per gallon.

This is P(x < 21)

z = 21-22/5 = -1/5 = -0.2

Therefore the probability of getting less than 21 miles per gallon will be;

P(x<21) = P (z < -0.2)

= 0.42074

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