Answer:
The p-value is;
d. 0.00131
Step-by-step explanation:
The given question parameters are;
Company A
Company B
Sample size 80
60
Sample mean
$16.75
$16.25
Population standard deviation
σ₁ $1.00 σ₂ $0.95
![z=\dfrac{(\bar{x}_{1}-\bar{x}_{2})-(\mu_{1}-\mu _{2} )}{\sqrt{\dfrac{\sigma_{1}^{2} }{n_{1}}+\dfrac{\sigma _{2}^{2}}{n_{2}}}}](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7B%28%5Cbar%7Bx%7D_%7B1%7D-%5Cbar%7Bx%7D_%7B2%7D%29-%28%5Cmu_%7B1%7D-%5Cmu%20_%7B2%7D%20%29%7D%7B%5Csqrt%7B%5Cdfrac%7B%5Csigma_%7B1%7D%5E%7B2%7D%20%7D%7Bn_%7B1%7D%7D%2B%5Cdfrac%7B%5Csigma%20_%7B2%7D%5E%7B2%7D%7D%7Bn_%7B2%7D%7D%7D%7D)
Therefor, we have;
![z=\dfrac{(16.75-16.25)-(0-0)}{\sqrt{\dfrac{1^{2} }{80}+\dfrac{0.95^{2}}{60}}} \approx 3.0128](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7B%2816.75-16.25%29-%280-0%29%7D%7B%5Csqrt%7B%5Cdfrac%7B1%5E%7B2%7D%20%7D%7B80%7D%2B%5Cdfrac%7B0.95%5E%7B2%7D%7D%7B60%7D%7D%7D%20%5Capprox%203.0128)
The p-value = 1 - 0.99869 (the area to the right of 3.01) = 0.00131
Answer:
87km
Step-by-step explanation:
Volume is proportional to radius cubed, so radius is proportional to the cube root of volume.
Increase volume by a factor of 10^6 and radius increases by a factor of the cube root of 10^6, which is 10^(6/3) = 10^2 = 100.
100 * 0.87 km = 87 km
Answer:
1.E
2.H
3.F
4.D
5.A
6.G
7.B
8.C
Step-by-step explanation:
Answer:
Which one do we answer
Step-by-step explanation:
He would have to pay $100. A 25% tip equals to $20 so add that to the original bill and you get $100. Hope this helped!