Answer:
second answer should be corr3ect tell em if wrong
Step-by-step explanation:
596 x 25% = 149
This implies 149 persons over the age of 65 voted.
I hope this helps.
Answer:
Step-by-step explanation:
Given that a statistics student would like to estimate the average age of students at her college.
Population std dev =2.5years
For 99% , Z critical = ±2.59
Margin of error = ![±2.59*\frac{2.5}{\sqrt{n} } \\= \frac{±6.475}{\sqrt{n} } =0.5](https://tex.z-dn.net/?f=%C2%B12.59%2A%5Cfrac%7B2.5%7D%7B%5Csqrt%7Bn%7D%20%7D%20%20%5C%5C%3D%20%5Cfrac%7B%C2%B16.475%7D%7B%5Csqrt%7Bn%7D%20%7D%20%3D0.5)
Simplify to get
![\sqrt{n} =12.95](https://tex.z-dn.net/?f=%5Csqrt%7Bn%7D%20%3D12.95)
n = 167.70
n=168
She must survey 168 people
Answer:
132
Step-by-step explanation:
TPR = 180
UPT = 48
180-48=132