Question

The news listed that the al?rage price Of a gallon Of gasoline

Answer 1

Answer:

b. between $3.04 and $3.36

Step-by-step explanation:

Given,

Price of 1 gallon of gasoline = $3.20

Margin of Error = 5%

We have to find out average cost of gallon of gasoline.

For this, we have to find out 5% of the price of gasoline. Which is calculated by dividing 5 by 100 and then multiply it by 3.20.

Amount of margin of error = $\frac{5}{100}\times3.20 = 0.16$

Hence The margin of error is ±, So we will subtract the amount of margin of error with actual amount of 1 gallon of gasoline. Also we will add the amount of margin of error with actual amount of 1 gallon of gasoline.

Margin of error 1 = $3.20-0.16= \ 3.04$

Margin of error 2 = $3.20+0.16= \ 3.36$

Hence the Average cost of a gallon of gasoline should be between $3.04 and $3.36.