Answer:
"There are 30 chairs in 5 rows. How many chairs are in each row?" Would be the correct story problem.
Complete Question
Answer:
a

b
Step-by-step explanation:
From the question we are told that
The sample size is n = 60
The first sample mean is 
The second sample mean is 
The first variance is 
The first variance is 
Given that the confidence level is 95% then the level of significance is 5% = 0.05
Generally from the normal distribution table the critical value of
is
Generally the first standard deviation is

=> 
=> 
Generally the second standard deviation is

=> 
=>
Generally the first standard error is



Generally the second standard error is



Generally the standard error of the difference between their mean scores is mathematically represented as

=> 
=> 
Generally 95% confidence interval is mathematically represented as
=>
=>
Answer:
A. h=3v/b
Step-by-step explanation:
v=1/3bh
1) divide by b
v/b=1/3h
2) multiply reciprical
3v/b=h
h=3v/b
Answer:
w=4
Step-by-step explanation:
7-16=-9
39-x=-9
39+9=48
39-48=-9
x=48
48/12=4
w=4