Divide 400 / 8000 = .05 Then you multiply .05 x 100 to get the percentage, which equals to 5%
Answer:
y = -2x + 7
Step-by-step explanation:
tbh too lazy to explain
Answer:
The sum of the page numbers on the facing pages of a book is 81 What are the page numbers
Step-by-step explanation:
The page numbers on facing pages of a book will always be consecutive. Therefore, let the left-hand page be denoted by x. Then the right-hand page would be x+1. x = 40.
Answer:
Yes it appropriate to use the normal approximation to find the probability that more than 43% of the people in the sample have high blood pressure
Step-by-step explanation:
From the question we are told that
The population proportion is p=0.4
The sample size is n = 39
The sample proportion is ![\^ p = 0.43](https://tex.z-dn.net/?f=%5C%5E%20p%20%3D%200.43)
Generally for normal approximation to be used
![np > 10](https://tex.z-dn.net/?f=np%20%3E%2010)
so np = 39 * 0.4 = 15.6 > 10
and ![n(1- p) > 10](https://tex.z-dn.net/?f=n%281-%20p%29%20%3E%20%2010)
so n(1-p ) = 39(1-0.4) = 23.4 >10
Given that the both condition is meet it mean that it appropriate to use the normal approximation to find the probability that more than 43% of the people in the sample have high blood pressure