Answer:
theres no image u need an imgae
Step-by-step explanation:
The first one is A because 8/100times 2 equals 16/200
The student T distribution would be used since we don't know the population variance (by extension the population standard deviation).
However, if n > 30, then the student T distribution is going to look very similar to the standard normal Z distribution. It won't be a perfect match, but it'll be close enough that it's more simple to use the Z distribution. With the Z distribution, you only have one set of values and you don't have to worry about the degrees of freedom.
Answer:
a=8,4
B=16,12
C=8,16
Step-by-step explanation: