Answer:
B. Lines of symmetry: 1
Step-by-step explanation:
I calculated it logically
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
Answer: its C
Step-by-step explanation: cause i did that already
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