statistics problem 9 please show all work and graphs as need

statistics problem 9.) please show all work and graphs as needed.

10
11
10.5
11
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13
10
10
10.5
11.5
14
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9
9.5
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10.5
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11.5
9
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10.5
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Getting the sample standard deviation,

s = As

df = n - 1 =    29
alpha = (1 - confidence level)/2 =    0.025

Then the critical values for chi^2 are

chi^2(alpha/2) =    45.7222858
chi^2(alpha/2) =    16.0470717

Thus, as

lower bound = (n - 1) s^2 / chi^2(alpha/2) =    0.990764114
upper bound = (n - 1) s^2 / chi^2(1 - alpha/2) =    2.822944948

Thus, the confidence interval for the variance is

(   0.990764114   ,   2.822944948   ) [ANSWER]

statistics problem 9.) please show all work and graphs as needed. 10 10 11 10.5 11 10 12 13 10 10 10.5 11.5 14 10 9 9.5 10 10 10.5 11 11.5 9 13 10 10.5 9 13 10

statistics problem 9 please show all work and graphs as need

Solution

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