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 :-
It would be 39 I hoped I help
A question like this should be answered by first looking at the number and the numbers you are given and making an estimate, testing it, and repeating if it is incorrect. It is relatively simple and I would like you to at least try a couple of times with an estimate of your own. If you really do have trouble with this, I will put the answers in a second. To make sure you understand the concept I will answer 3 of the 4 and you can try the last one. I will also just state the number of steps and leave the most of the expression writing to you. ;)
A. 8 feet forward, 8 feet forward. 8×2 or 0 + 8 + 8
B. Probably the hardest. Good thing you get to do it :)
C. 6 feet forward, 5 feet forward. 0 + 6+5 or 0 + 5+6 (This shows the commutative property)
D. 8 feet forward, 5 feet back. 0 + 8 - 5 or 0 - 5 + 8.
(You Don't Need the 0's in any of them unless you are showing the starting point which you probably are required to do, but since technically the Cecil starts at 0, added the 0 as the point at which to start your expression.)
Hii if he answered 122 questions correct, or 60%, then there were a total of 200 questions on the exam
Answer:
i think that one of the answers is (3,2)
Step-by-step explanation:
