# Statistics question, and some help:)

• Aug 8th 2006, 09:53 AM
kwtolley
Statistics question, and some help:)
A consumer's group checked the gasoline mileage (to the nearest milr per gallon) on 25 different cars. The following gives a summary of the findings.

Miles per gallon Frequency
less than 15 2
16-20 4
21-30 13
31-40 5
over 40 1
total cars =25
Which of the following quantities can be obtained from the table?
1. The number of cars that got over 30 miles per gallon.
2. The number of cars that got less than 10 miles per gallon.
3. The number of cars that got 30 miles per gallon.
4. The number of cars that got 20-30 miles per gallon.

Ok if you look at the Interval of 21-30 and 31-40 it is 9 which would give you 1 as the answer. Is this right, thanks for looking at this long problem.
• Aug 8th 2006, 11:52 AM
CaptainBlack
Quote:

Originally Posted by kwtolley
A consumer's group checked the gasoline mileage (to the nearest milr per gallon) on 25 different cars. The following gives a summary of the findings.

Miles per gallon Frequency
less than 15 2
16-20 4
21-30 13
31-40 5
over 40 1
total cars =25
Which of the following quantities can be obtained from the table?
1. The number of cars that got over 30 miles per gallon.
2. The number of cars that got less than 10 miles per gallon.
3. The number of cars that got 30 miles per gallon.
4. The number of cars that got 20-30 miles per gallon.

Ok if you look at the Interval of 21-30 and 31-40 it is 9 which would give you 1 as the answer. Is this right, thanks for looking at this long problem.

Looks OK, 1 can be obtained, and all the otheres cannot

RonL
• Aug 8th 2006, 12:47 PM
Quick
you could say:

1. $\displaystyle c_{>30}=6$

2. $\displaystyle c_{<10}\leq2$

3. $\displaystyle c_{=30}\leq13$

4. $\displaystyle c_{20-30}\leq17$

but, as said before, only #1 has an exact amount.
• Aug 8th 2006, 09:13 PM
kwtolley
thank you both
wow I got one right, thanks for checking my answer.