In a study conducted by the Department of Environmental Sciences at Virginia Tech, the steel rods supplied by two different companies were compared. Ten sample springs were made out of the steel rods supplied by each company and a measure of flexibility was recorded for each. The data are as follows: Company-A: Company-B: 6.1 8.2 7.1 7.5 8.1 6.0 8.0 6.5 7.2 7.0 12 9.5 9.9 10.2 10.2 9.7 11.0 11.1 10.2 9.6 a. Calculate the standard deviation for the data of the two companies. b. Which company is better?

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In a study conducted by the Department of Environmental Sciences at Virginia Tech, the steel rods supplied by two different companies were compared. Ten sample springs were made out of the steel rods supplied by each company and a measure of flexibility was recorded for each. The data are as follows: Company-A: 6.1 8.2 7.1 7.5 8.1 6.0 8.0 6.5 7.2 7.0 Company-B: 12 9.5 9.9 10.2 10.2 9.7 11.0 11.1 10.2 9.6 a. Calculate the standard deviation for the data of the two companies. b. Which company is better?     

In a study conducted by the Department of Environmental Sciences at Virginia Tech, the steel rods
supplied by two different companies were compared. Ten sample springs were made out of the
steel rods supplied by each company and a measure of flexibility was recorded for each. The data
are as follows:
Company-A:
Company-B:
6.1
8.2
7.1
7.5
8.1
6.0
8.0
6.5
7.2
7.0
12
9.5
9.9
10.2
10.2
9.7
11.0
11.1
10.2
9.6
Calculate the standard deviation for the data of the two companies.
Which company is better?
a.
b.
Transcribed Image Text:In a study conducted by the Department of Environmental Sciences at Virginia Tech, the steel rods supplied by two different companies were compared. Ten sample springs were made out of the steel rods supplied by each company and a measure of flexibility was recorded for each. The data are as follows: Company-A: Company-B: 6.1 8.2 7.1 7.5 8.1 6.0 8.0 6.5 7.2 7.0 12 9.5 9.9 10.2 10.2 9.7 11.0 11.1 10.2 9.6 Calculate the standard deviation for the data of the two companies. Which company is better? a. b.
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