Answer: 10
Step-by-step explanation:
The formula to find the sample size is given by :-
![n=(\dfrac{z_{\alpha/2}\ \sigma}{E})^2](https://tex.z-dn.net/?f=n%3D%28%5Cdfrac%7Bz_%7B%5Calpha%2F2%7D%5C%20%5Csigma%7D%7BE%7D%29%5E2)
Given : Significance level : ![\alpha=1-0.99=0.1](https://tex.z-dn.net/?f=%5Calpha%3D1-0.99%3D0.1)
Critical z-value=![z_{\alpha/2}=2.576](https://tex.z-dn.net/?f=z_%7B%5Calpha%2F2%7D%3D2.576)
Margin of error : E=5
Standard deviation : ![\sigma=6](https://tex.z-dn.net/?f=%5Csigma%3D6)
Now, the required sample size will be :_
![n=(\dfrac{(2.576)\ 6}{5})^2=9.55551744\approx10](https://tex.z-dn.net/?f=n%3D%28%5Cdfrac%7B%282.576%29%5C%206%7D%7B5%7D%29%5E2%3D9.55551744%5Capprox10)
Hence, the final sample required to be of 10 .
Answer:
B) 2^3 x 3 x 5
D) 3^2 x 5^2
Step-by-step explanation:
6 and 10 are composite numbers, not prime, so the answer choices containing those factors can be eliminated. The remaining choices are shown above.
Answer:
Cos C = adjecent/hypotenuse
Cos C = 14/50
divide the numerator and the denominator by 2
Cos C = 7/25
The answer is C
Answer:
100 and 126
Step-by-step explanation:
if one piece is 26 centimetres longer you add 26 to the original amount