Answer:
The value is 
Step-by-step explanation:
From the question we are told that
The null hypothesis is 
The level of significance is 
From the z table the critical value of 
considering the two tails of the normal curve( This is because this a two tailed test ) is
Hence the critical value is
= 1.5
<span>Move decimal point to right two places, to change into percent </span>
<span>= 150%</span>
Answer:
since they are alternate exteriors, we put a equal sign
2x+78=5x+15
next we subtract 78 on both sides
2x+78-78=5x+15-78
2x=5x-63
then we subtract 5x on both sides
2x-5x=5x-5x-63
-3x=-63
after that we divide -3 on both sides
-3x/-3=-63/-3
and the answer is
x=21
Step-by-step explanation:
