Answer: a. 170 b. 752
Step-by-step explanation:
The formula to find the sample size is given by :-
, where p is the prior estimate of population proportion.
= Two-tailed z-value for (significance level).
E= Margin of error .
Given : Margin of error = 0.03
Confidence level = 90%=0.90
By z-value table :
a) The president's political advisors estimated the proportion supporting the current policy to be : p= 0.06.
Required sample size :
∴ Required sample size = 170
b) If no prior estimate of population proportion is given , then we assume
p= 0.5
Required sample size :
∴ Required sample size = 752
Answer:
B) 1.
Step-by-step explanation:
x^2 - 8x + 7 = 0
(x - 1)(x - 7) = 0
x= 1, 7.
The number "seven hundred and four thousand, six hundred and twenty" is written as 704,620 in numeric or standard form.<span> In converting a number expressed in words to numerals, it is important to write each digit in its proper place value.</span>
Answer:
(1, -3)
Step-by-step explanation:
You can see where the two lines intersect - that's the solution.
The friend lives in a town that is 10° farther north than 40° N. The latitude of that town is 40° +10° = 50° N. When that latitude is reflected across the equator, N changes to S. The new latitude would be c. 50° S.