You need to find the area thus you need to multiply
The process is also known as recurssion which is most often the term used in computer science.
Both terms mean that you do something to the previous term to get to the next term. In general terms it is written like this
fn = f_(n - 1) + d for an arithmetic progression. The series begins with n =2 , 3 , 4 , 5 , 6 ...
f1 is defined as 7
so f2 = f_(2 - 1) - 2 or
f2 = f_1 - 2
f2 = 7 - 2
f2 = 5
f3 = f_(3 - 1) - 2 or
f3 = f_2 - 2
f3 = 5 - 2
f3 = 3 and so on. Computers handle this much better than people do. They can go through a thousand such calculations most of the time in less than a second.
Answer:
-9-2=-11
Step-by-step explanation:
-9-2=-11
Answer:
The sample size needed if the margin of error of the confidence interval is to be no more than 0.02.
n= 2015
Step-by-step explanation:
Given the customer relations department will survey a random sample of customers and compute a 95% confidence interval for the proportion that are dissatisfied
Given data from past studies, they believe that this proportion will be about 0.28
The proportion of success(p) = 0.28
We know that the margin of error of 95% of intervals of given proportion
margin of error =
…(i)
Given margin of error = 0.02
Substitute values in equation (i) cross multiplication √n
0.02 √n = 2√0.28X0.72
On calculation, we get √n = 44.89
squaring on both sides, we get
n = 2015
<u>Conclusion</u>:-
The sample size needed if the margin of error of the confidence interval is to be no more than 0.02.
n= 2015
90 - x = 81
x = 90 - 81 = 9
The answer is 9.