During December, the production department of a process operations system completed and transferred to finished goods a total of 65,000 units of product. At the end of March, 15,000 additional units were in process in the production department and were 80% complete with respect to materials. The beginning inventory included materials cost of $57,500 and the production department incurred direct materials cost of $183,000 during December. Compute the direct materials cost per equivalent unit for the department using the weighted-average method.

a. $3.70.
b. $2.38.
c. $2.82.
d. $3.12.
e. $4.79.

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.