The two equations would be, respectively, y=12,000-400x and y=6000-300x
Set the two equal to one another and solve for x.
The answer is 60 hours
Answer:
Hence, the minimum required sample size (n) should be = 1692
Step-by-step explanation:
Solution:-
- The estimation error, E = 2%
- The confidence level, CI = 90 %
- Since the proportion of the positive lab tests for prostate cancer are actually proven correct through subsequent biopsy are unknown we will assume the corresponding proportion to be p = 0.58
- The required sample size is a function of confidence value and error of estimation (E):
Where,
- The critical value of the confidence level = 90% would be:
significance level ( α ) = 1 - CI = 1 - 0.90 = 0.1
Z-critical = Z_α/2 = Z_0.05 = 1.645
- The required sample size (n) can be calculated:
![n = 0.5*( 1 - 0.5 ) * (\frac{1.645}{0.02})^2\\\\n = 1691.265](https://tex.z-dn.net/?f=n%20%3D%200.5%2A%28%201%20-%200.5%20%29%20%2A%20%28%5Cfrac%7B1.645%7D%7B0.02%7D%29%5E2%5C%5C%5C%5Cn%20%3D%201691.265)
- Hence, the minimum required sample size (n) should be = 1692
Answer:
-2
Step-by-step explanation:
The area of a trapezoid is half its height multiplied by the sum of the lengths of its two bases.
6,550=1/2b(115+85)
<span>115+85= 200
1/2*200= 100
6,550/100=65.5
h=</span><span>65.5
</span>
The height is 65.5 cm