Answer:
1) yes
2) no
3) yes
4)no
5)no
Step-by-step explanation:
Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-

, where
= Population standard deviation.
n= sample size
= Sample mean
z* = Critical z-value .
Given :
n= 49
Two-tailed critical value for 95% confidence interval = 
Then, the 95% confidence interval would be :-




Hence, the 95% confidence interval for estimating the population mean
:

9:6,9/6, 9x6 156/104 , 156:104 , 156x104 because there the same thing but different signs