The answer is C
if you put x and y in each equation it becomes true
Z because y=Mx+b so whatever is before x is the answer in this case it’s z
Answer: 29/7 or 4 1/7
Step-by-step explanation:
4x+3x-8=14+7
7x-8=14+7
7x-8=21
7x=29
x=29/7 or 4 1/7
Answer: 3.49
Step-by-step explanation:
When standard deviation is known then the test statistic for difference of two population means (independent population) is given by :-
Given :
Then , the value of the test statistic will be :-
Hence, the value of the test statistic = 3.49