Each year, johan typically does all his own land- scaping and yard work. he spends $200 per year on mulch for his f lower beds, $225 per year on f lowers and plants, $50 on fertilizer for his lawn, and $245 on gasoline and lawn mower maintenance. the lawn and garden store where he obtains his mulch and fertilizer charges other customers $500 for the service of spreading that much mulch in flower beds and $50 for the service of distributing fertilizer over a yard the size of johan’s. paying a profes- sional yard care service to mow his lawn would require an expenditure of $1,200 per year, but in that case johan would not have to buy gasoline or maintain his own lawn mower. a. in a normal year, how much does johan's landscaping and yard work contribute to gdp?

Select the correct answers. mila is at a flea market. she has $50 in her wallet. she decides that she will spend $15 on jewelry, $20 on a pair of jeans, $5 on a t-shirt, and $10 on something to eat. she likes a one-of-a-kind t-shirt, but the seller is not ready to sell it for less than $8. she thinks of five ways to deal with this situation. which two choices indicate a trade-off?

There are more than two types of bachelors’ degrees true or false?

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.