) The following data represent the length of life in years, measured to the nearest tenth, of 30 similar
fuel pumps:
2.0 3.0 0.3 3.3 1.3 0.4
0.2 6.0 5.5 6.5 0.2 2.3
1.5 4.0 5.9 1.8 4.7 0.7
4.5 0.3 1.5 0.5 2.5 5.0
1.0 6.0 5.6 6.0 1.2 0.2
(a) Describe the subjects and specify the type of data above.
(b) What is the sample size for the above sample?
(c) Compute the sample mean, mode, median, sample range, and sample standard deviation.
(d) Set up a relative frequency distribution and construct a relative frequency histogram. Comment
on the distribution of length of life for fuel pumps and compare it with the result you obtained
in (c).
