Question

A huge trucking firm determines that its fleet of trucks averages a mean of 12.4 miles per gallon with a standard deviation of 1.2 miles per gallon on cross-country hauls. The distribution of miles per gallon is approximately normally distributed. What is the probability that a randomly selected truck averages fewer than 10 miles per gallon

Answer 1

Answer:

$P(x$

Step-by-step explanation:

From the question we are told that

Sample mean $\=x=12.4$

Standard deviation $\sigma=1.2miles\ per\ gallon$

Probability of $P(x$

Generally the equation for $P(x$ is mathematically given as

$P(x$

$P(x$

Therefore The probability that a randomly selected truck averages fewer than 10 miles per gallon

$P(x$