Answer:
The upper bound of a 99% confidence interval for the percentage satisfied for all customers in the database is 88.70%.
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 .
Sample of 252 customers, 208 are satisfied:
This means that
99% confidence level
So , z is the value of Z that has a pvalue of , so .
The upper limit of this interval is:
As a percentage:
100%*0.8870 = 88.70%
The upper bound of a 99% confidence interval for the percentage satisfied for all customers in the database is 88.70%.
Answer is (D). -6-7x. Or to play with it a lil bit -7x-6. The numbers and coefficients and signs are all correct doesn’t matter how you form them unless “they” disagree with it
Hello from MrBillDoesMath!
Answer: (11,6)
Discussion:
W = (6,4)
V = (16, 8)
The midpoint is the ordered pair (average of x values, average of y values)
or
( ( 6 + 16 )/2, (4 + 8)/2 ) =
( 22/2, 12/2) =
(11,6)
which is the second choice on the leftmost list of choices
Thank you,
MrB
Angle two is 39° because of the law of congruent angles within two parallel lines
Answer:
The answer is c my bad
Step-by-step explanation: your welcome
It is give me brainliest :)