Answer:
width (C.I) ∠ width (P.I)
Step-by-step explanation:
In statistics, a confidence interval (C.I) is known as an interval estimate which is computed using the observed data that might contain the actual value of an unknown parameter. The confidence level is commonly used for estimation before examining the actual data. On the other hand, the prediction interval (P.I) is a range of values that calculate the value of a new observation by considering the existing model developed using the actual data. Therefore, the true statement is:
width (C.I) ∠ width (P.I)
Answer:
The margin of error is of 0.038 = 3.8%.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
For this problem, we have that:
90% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The margin of error is:
The margin of error is of 0.038 = 3.8%.
Answer:
Step-by-step explanation:
The answer is 480 because the equation is always length times width.
First you would distribute the 2 to the -8 (because of the parenthithese), which would give you -16.
Then you would add the -3 .
So, your answer would be -19. Hope this helps!
