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:
Stephanie brought the 20 chocolate for $50
Step-by-step explanation:
If she have $60 and only have $10 left that would me that the chocolate are $50
Answer:
False, true, true, false, false
Step-by-step explanation:
Gina will earn at least 30% of intreat in the next 2 year .
1.666666666666667 to be exact, but rounded it is 1.66
