Answer:
162 ft^2
Step-by-step explanation:
18 * 18 = 324
324/2 = 162
The area of the patio is 162 square feet
Answer:
8v^3+24-48x^3
Distribute the -8 to each term to get your answer.
Hope I helped!
Answer:
a) 0.3495
b) (9.65, 10.35)
Step-by-step explanation:
We are given the following in the question:
Sample mean,
= 10 hours
Sample size, n = 64
Alpha, α = 0.02
Population standard deviation, σ = 1.2 hours
a) Margin of error
Formula
![z_{critical}\dfrac{\sigma}{\sqrt{n}}](https://tex.z-dn.net/?f=z_%7Bcritical%7D%5Cdfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D)
Putting values, we get,
![M.E = (2.33)\dfrac{1.2}{\sqrt{64}} = 0.3495](https://tex.z-dn.net/?f=M.E%20%3D%20%282.33%29%5Cdfrac%7B1.2%7D%7B%5Csqrt%7B64%7D%7D%20%3D%200.3495)
b) the sample mean is 10 hours, then the 98% confidence interval
![\bar{x} \pm M.E](https://tex.z-dn.net/?f=%5Cbar%7Bx%7D%20%5Cpm%20M.E)
Putting the values, we get,
![10\pm 0.3495\\=(9.6505, 10.3495)\\\approx (9.65, 10.35)](https://tex.z-dn.net/?f=10%5Cpm%200.3495%5C%5C%3D%289.6505%2C%2010.3495%29%5C%5C%5Capprox%20%289.65%2C%2010.35%29)
Answer:
i think this is it
Step-by-step explanation: