Answer:
The 95% confidence interval is (29.54 - 53.46}
Step-by-step explanation:
given data:
![\hat X = 41.5](https://tex.z-dn.net/?f=%5Chat%20X%20%3D%2041.5)
Se = 6.1
n = 755
a) best estimate ![\hat x = 41.5](https://tex.z-dn.net/?f=%5Chat%20x%20%3D%2041.5)
b) at 95% confidence interval
![\alpha = 1- 0.95 = 0.05](https://tex.z-dn.net/?f=%5Calpha%20%3D%201-%200.95%20%3D%200.05)
![\alpha /2 = 0.025](https://tex.z-dn.net/?f=%5Calpha%20%2F2%20%3D%200.025)
![z_{\alpha/2} = z_{0.025} = 1.96](https://tex.z-dn.net/?f=z_%7B%5Calpha%2F2%7D%20%3D%20z_%7B0.025%7D%20%3D%201.96)
at 95% confidence interval for [/tex]\mu[/tex]
![\hat x \pm z_{\alpha /2} \times Se](https://tex.z-dn.net/?f=%5Chat%20x%20%5Cpm%20z_%7B%5Calpha%20%2F2%7D%20%5Ctimes%20Se)
![41.5 \pm 1.96\times 6.1](https://tex.z-dn.net/?f=41.5%20%5Cpm%201.96%5Ctimes%206.1)
![41.5 \pm 11.96](https://tex.z-dn.net/?f=41.5%20%5Cpm%2011.96)
The 95% confidence interval is (29.54 - 53.46}
Answer:
136
Step-by-step explanation:
The two scales are supplementary, so the value on the second scale is ...
180° -44° - 136°
Answer:
228 males
Step-by-step explanation:
Let x be the number of males.
This means x + 72 is the total number of people.
So
is the fraction of females in the force.
Thus, we can form the equation:
![\frac{72}{x+72} = 0.24](https://tex.z-dn.net/?f=%5Cfrac%7B72%7D%7Bx%2B72%7D%20%3D%200.24)
![x+72 = \frac{72}{0.24}](https://tex.z-dn.net/?f=x%2B72%20%3D%20%5Cfrac%7B72%7D%7B0.24%7D)
![x = \frac{72}{0.24} -72](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B72%7D%7B0.24%7D%20-72)
![x = 228](https://tex.z-dn.net/?f=x%20%3D%20228)
Thus, the answer is 228 males.
SA = 1,226 in.² (Hope this helps!)
Answer:
P(G)= 7/10
B, 1, P(not B)
1- 8/10, p(Y)= 2/10
Step-by-step explanation:
hope this helps
correct me if this is wrong