1 pts
Question 5
The size of gasoline tanks in cars is normally distributed with a mean size of 24.8 gallons and a standard
deviation of 6.2 gallons. What percent of tanks are less than 31 gallons. Round answer to the nearest
percent
84%
71%
16%
20%

And we can find this probability using the normal standard distribution or excel and we got:

And if we convert this into % we got 84% so then the best solution would be:

84%

Step-by-step explanation:

Let X the random variable that represent the size of gasoline tanks of a population, and for this case we know the distribution for X is given by:

Where and

We are interested on this probability

And we can use the z score formula given by:

Using the last formula we got:

And we can find this probability using the normal standard distribution or excel and we got:

And if we convert this into % we got 84% so then the best solution would be:

84%

what is the original number? you forgot to add it.