Lake charles seafood makes 500 wooden packing
boxes for fresh seafood per day, working in two 10-hour shifts.
due to increased demand, plant managers have decided to operate
three 8-hour shifts instead. the plant is now able to produce
650 boxes per day.
a) calculate the company�s productivity before the change in
work rules and after the change.
b) what is the percentage increase in productivity?
c) if production is increased to 700 boxes per day, what is the
new productivity?

Alarge university wanted to study the relationship between completing an internship during college and students' future earning potential. prom the same graduating class, they selected a random sample of 80 students who completed an internship and 100 students who did not complete an internship and examined their salaries five years after graduation. they found that there was a statistically higher mean salary for the internship group than for the noninternship group. which of the following interpretations is the most appropriate? a. there could be a confounding variable, such as student major, that explains the difference in mean salary between the internship and no internship groups. b. we cannot infer anything from these data since the distribution of salaries is likely right skewed. c. you cannot draw any valid conclusions because the sample sizes are different. d. more students should complete internships because having an internship produces a higher salary.