One circular table has a diameter of 9 ft, and another circular table has a diameter of 20 ft. How much greater is the area of t
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Answer:
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 67
Variance = 3.85
We have to find 80% confidence interval for the population variance of the weights.
Degree of freedom = 67 - 1 = 66
Level of significance = 0.2
Chi square critical value for lower tail =
Chi square critical value for upper tail =
80% confidence interval:
Putting values, we get,
Thus, (3.13,4.91) is the required 80% confidence interval for the population variance of the weights.
The simplified answer and the solution is listed below:
![\sqrt[4]{81 x^{8} y^{5} } \\ \\ = \sqrt[4]{(3)^{4} x^{8} y^{5} } \\ \\ = \sqrt[4]{(3 x^{2} y)^{4} y} \\ \\ =3 x^{2} y \sqrt[4]{y}](https://tex.z-dn.net/?f=%20%5Csqrt%5B4%5D%7B81%20x%5E%7B8%7D%20%20y%5E%7B5%7D%20%7D%20%20%5C%5C%20%20%5C%5C%20%0A%3D%20%5Csqrt%5B4%5D%7B%283%29%5E%7B4%7D%20x%5E%7B8%7D%20%20y%5E%7B5%7D%20%20%7D%20%20%5C%5C%20%20%5C%5C%20%0A%3D%20%5Csqrt%5B4%5D%7B%283%20x%5E%7B2%7D%20y%29%5E%7B4%7D%20y%7D%20%20%5C%5C%20%20%5C%5C%20%0A%3D3%20x%5E%7B2%7D%20y%20%5Csqrt%5B4%5D%7By%7D%20)