Answer: A
Step-by-step explanation:
Answer:
4'F
Step-by-step explanation:
Answer: 0.701
Step-by-step explanation:
Formula : , where significance level , Population standard deviation, n= sample size.
As per given, n= 22
Critical z- value for 90% confidence level :
Then,
Hence , error bound (EBM) of the confidence interval with a 90% confidence level= ± 0.701