Ortman corporation makes a product with the following standard costs: standard quantity or hours standard price or rate direct materials 7.9 liters $8.00 per liter direct labor 0.7 hours $17.00 per hour variable overhead 0.7 hours $1.00 per hour the company reported the following results concerning this product in may. actual output 1,600 units raw materials used in production 12,490 liters actual direct labor-hours 1,090 hours purchases of raw materials 14,000 liters actual price of raw materials purchased $8.10 per liter actual direct labor rate $16.10 per hour actual variable overhead rate $0.90 per hour the company applies variable overhead on the basis of direct labor-hours. the direct materials purchases variance is computed when the materials are purchased. the variable overhead rate variance for may is: $109 u $112 u $112 f $109 f

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.