The samples were analysed to determine their chemical composition and the percentage of aluminum oxide in each of 9 and 10 samples at two sites shown in the table below. a. Construct 90% confidence interval for the variances of aluminum oxide in two sites: b. If the 90% confidence interval is given by [0.334, 2.640], what can you say about the variances of aluminum oxide in two sites.

MATLAB: An Introduction with Applications
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The samples were analysed to determine their chemical composition and the percentage of aluminum oxide in each of 9 and 10 samples at two sites shown in the table below.

a. Construct 90% confidence interval for the variances of aluminum oxide in two sites:

b. If the 90% confidence interval is given by [0.334, 2.640], what can you say about the variances of aluminum oxide in two sites.

 

Island thorn
Ashley Rails
18.3
17.7
15.8
18.3
18.0
16.7
18.0
14.8
20.8
10.2
15.4
16.9
12.02
12.03
11.01
21.22
22.00
20.6
19.1
Transcribed Image Text:Island thorn Ashley Rails 18.3 17.7 15.8 18.3 18.0 16.7 18.0 14.8 20.8 10.2 15.4 16.9 12.02 12.03 11.01 21.22 22.00 20.6 19.1
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