In a study conducted by the mechanical engineering department at a university, t
ID: 3271334 • Letter: I
Question
In a study conducted by the mechanical engineering department at a university, 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 provided in the accompanying table. Complete parts (a) and (b) below. (a) Calculate the sample mean and median for the data for the two companies. The sample mean for Company A is . The sample mean for Company B is . (Type integers or decimals. Do not round.)Explanation / Answer
Company A
9.4
8.2
7.4
9
8.4
7
8.1
6
8.6
7.1
Sample mean = Total / no. of observation
= 79.2/10
= 7.92
The sample mean of Company A is 7.92
Company B
10.6
9.7
10.5
10.3
9.9
10.2
10.6
11.1
10.3
10.4
Sample mean = Total / no. of observation
= 103.6/10
= 10.36
The sample mean of Company B is 10.36
Company A
9.4
8.2
7.4
9
8.4
7
8.1
6
8.6
7.1