Step-by-step explanation:
12x - 6 is your answer in simplified form
Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-

Given : Sample size :
, which is a large sample , so we apply z-test .
Sample mean : 
Standard deviation : 
Significance level : 
Critical value : 
Now, a confidence interval at the 95% level of confidence will be :-

Answer:
22
Step-by-step explanation:
The factored pairs of 45 are:
1 x 45
3 x 15
5 x 9
Answer:
????
Step-by-step explanation: