Answer: 1692
Step-by-step explanation:
Formula to find the sample size :

Given : Confidence level : 
⇒ significance level =
z-value for 90% confidence interval (using z-table)=
Prior estimate of the population proportion (p) of customers who keep up with regular vehicle maintenance is unknown.
Let we take p= 0.5
Margin of error : E= 2%=0.02
Now, the required sample size will be :

Simplify , we get

Hence, the required sample size = 1692
Divide total miles by miles per gallon:
364 miles / 20 miles per gallon = 18.2 gallons
Answer:use a caculator
Step-by-step explanation:
Simple duh like come on it easy
Do you have a specific question or like nd question example with numbers
¿Tiene una pregunta específica o como ejemplo de pregunta con números?
Answer:
C
Step-by-step explanation: