In a perfectly competitive industry, price equals marginal cost. Which of the following is NOT an implication of this? Group of answer choices Firms will always make zero economic profit A competitive firm sells its product at the opportunity cost of the product. The price of the product accurately reflects its cost to society. Competitive firms maximize profits.

On july 1, oura corp. made a sale of $ 450,000 to stratus, inc. on account. terms of the sale were 2/10, n/30. stratus makes payment on july 9. oura uses the net method when accounting for sales discounts. ignore cost of goods sold and the reduction of inventory. a. prepare all oura's journal entries. b. what net sales does oura report?

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.

Sales at a fast-food restaurant average $6,000 per day. the restaurant decided to introduce an advertising campaign to increase daily sales. to determine the effectiveness of the advertising campaign, a sample of 49 days of sales were taken. they found that the average daily sales were $6,300 per day. from past history, the restaurant knew that its population standard deviation is about $1,000. if the level of significance is 0.01, have sales increased as a result of the advertising campaign? multiple choicea)fail to reject the null hypothesis.b)reject the null hypothesis and conclude the mean is higher than $6,000 per day.c)reject the null hypothesis and conclude the mean is lower than $6,000 per day.d)reject the null hypothesis and conclude that the mean is equal to $6,000 per day.expert answer