4) Screen printing a batch of shirts requires 3 minutes per shirt in addition to 26 minutes of initial set-up
time. If it takes 59 minutes to screen-print a batch of
shirts, how many shirts are in the batch?

Write and solve an equation for this problem.
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The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%