URGENT!! NEED HELP QUICK! ----------------------- (a−2b)^3 When a=−2 and b=−12
1 answer:
You might be interested in
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
Answer:
The number is 8 because
And if you add 4, you get 20
Hence, the number is 8