A company's normal operating activity is to produce 500 units per month. During its first two months of operations, it produced 100 units per month. Following a great article about the product, product spiked to 1,000 units per month, but the spike only lasted for one month. Which of the following best approximates the company's relevant range?a. 450 - 510 unitsb. 100 - 1,000 unitsc. 500 - 1,000 unitsd. 100,500, or 1,000 units

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.