Bob is interested in comparing the mean life (in minutes) of four types of batteries. A random sample of each of the four types of batteries is selected and for each battery a measurement is made for the time it takes for the battery's energy output to fall below a predetermined level. The results are given below. Please show work with minitab
able[[,Battery 1,Battery 2,Battery 3,Battery 4],[,43,45,45,45],[,47,48,43,48],[,48,49,41,55],[,45,46,41,47],[,46,52,38,58],[,42,45,46,50],[,46,44,45,46],[,45,47,41,53],[,49,,43,56],[Mean,45.7,47,41,],[ able[[Standard],[deviation]],2.24,2.62,2.46,4.76]]
A) This data on Battery 1 and Battery 4 is an example of paired data: a) True b) False
B ) The median for the Battery 3 data is:
a) 41 b) 45 c) 42 d) 4 e) none of the above.
C) The 3rd quartile for the Battery 3 data is:
a) 41 a) 45 c) 42 d) 4 e) none of the above.
D) An approximate 90% confidence interval for the true average difference between lifetimes for Battery 3 and Battery 4 is:
a) (-11.96, -5.04) b) (-11.41, -5.59) c) (-10.23, -6.77) d) (-9.95, -7.05)
Please show work with minitab
E) Test the claim that means life (in minutes) of four types of batteries are different. If yes, are there pairs of means that are quite similar? Do you need any assumptions?
Please show work with minitab
Bob is interested in comparing the mean life (in minutes) of four types of batteries. A random sample of each of the four types of batteries is selected and for each battery a measurement is made for the time it takes for the battery's energy output to fall below a predetermined level. The results are given below.Please show work with minitab
Battery 1
Battery 2
Battery 3
Battery 4
43
45
45
45
47
48
43
48
48
49
41
55 47
45
46
41
46
52
38
58
42
45
46
50
46
44
45
46
45
47
41
53
49
43
56
41
Mean
45.7
47 2.62
42.4 2.46
50.9
Standard deviation
2.24
4.76