Answer:
i think it is 345 but not sure
Step-by-step explanation:
Answer:
I can't see it the picture is not clean or close enough but it's in the bottom left
Answer:
10
Step-by-step explanation:
Answer: 37
Step-by-step explanation:
As per given description in the question, we have
Population standard deviation : 
Critical value for 98% confidence interval = 
Margin of error : E= 1 mile per gallon
Formula we use to find the sample size :

i.e. 

Therefore , the number of automobiles should be used in the test =37