1. The idle times during the eight-hour day shift and the night shift are to be compared. A time study revealed the following numbers of minutes of idle time for eight-hour periods.
Day shift: 92, 103, 116, 81, 89
Night shift: 96, 114, 80, 82, 88, 91
Is there a difference in the idle time between the two shifts? Test at the .05 level.
2. Refer to the Baseball 2002 data (see attached excel spreadsheet), which reports information on the 2002 Major League Baseball season.
a. Rank the teams by the number of wins and their total team salary. Compute the coefficient of rank correlation between the two variables. At the .01 significance level, can you conclude that it is greater than zero?
b. Assume that the distributions of team salaries for the American League and National League do not follow the normal distribution. Conduct a test of hypothesis to see if there is a difference in the two distributions.
Solution finds if there is a difference in idle work hours between shifts and ranks baseball teams by salary with rank correlation between variables. Attached as Excel.