Question
In: Statistics and Probability
The following sample information is given concerning the ACT scores of high school seniors form two...
The following sample information is given concerning the ACT scores of high school seniors form two local schools.
|
School A |
School B |
|
= 11 |
= 18 |
|
= 25 |
= 23 |
|
= 19 |
= 10 |
At 95% confidence what is the marginal of error of the interval estimate for the difference between the two populations? Please keep three decimal points of your answer.
Solutions
Expert Solution
Answer:-
Given That:-
The following sample information is given concerning the ACT scores of high school seniors form two local schools.
Let to find the 95% confidence interval in difference between two means.
schoolA:
schoolB:
Now find the marginal error of the estimate is
Confidence interval is 95%
Critical value of 
and
Substitute the sp value in above
Marginal of error of interval estimate is 2.879
orchestra answered 3 years agoRelated Solutions
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