ons 18. In a pall, 84% of those surveyed were in favor of a law banning assault The margin of error is 6.5% a. What is the confidence interval? points) b. If two months later, the same survey with the same margin of error is repeated, and the new measured value is 75%, can we say anything about whether the true value changed? (2 points) 19. I am considering investing in Microsoft and Amazon. I want to buy 1000 dollars in shares in both (so 2000 total), and I figure there is a 1 in 4 chance that the Microsoft stock grows to 1500 dollars and a 1 in 2 chance that the Amazon stock grows to 2500. What is the expected value of my investment? Is this a good investment based on the expected value? (3 points) ons 18. In a pall, 84% of those surveyed were in favor of a law banning assault The margin of error is 6.5% a. What is the confidence interval? points) b. If two months later, the same survey with the same margin of error is repeated, and the new measured value is 75%, can we say anything about whether the true value changed? (2 points) 19. I am considering investing in Microsoft and Amazon. I want to buy 1000 dollars in shares in both (so 2000 total), and I figure there is a 1 in 4 chance that the Microsoft stock grows to 1500 dollars and a 1 in 2 chance that the Amazon stock grows to 2500. What is the expected value of my investment? Is this a good investment based on the expected value? (3 points)