Businesses in the nation of Islandia have been accumulating cash because they have a pessimistic outlook of the national economy Recent changes in the economic outlook of Islandia have caused business leaders to Suppose that businesses in the country invest a total of $30 billion of this cash. begin to invest some of their accumulated cash Instructions: Enter a positive number to show an increase and a negative number to show a decrease.
a. What would be the maximum expected change in GDP if Islandia's marginal propensity to consume (MPC) is 0.8?
$ billion
b. Suppose that the recent economic outlook in the country of Mountainia has been the opposite. Businesses have postponed planned investments and have begun to accumulate cash. If businesses in Mountainia postpone $5 billion of their planned investments, what would be the maximum expected change in GDP if its marginal propensity to save (MPS) is 0.25?
$ billion

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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.