The national average for the math portion of the college boards SAT test is 515.
ID: 3046147 • Letter: T
Question
The national average for the math portion of the college boards SAT test is 515. The college board periodically rescaled the test scores such that the standard deviation is 100. Answer the following questions using a bell shaped distribution and the empirical rule for the math test scores The national average for the math portion of the college boards SAT test is 515. The college board periodically rescaled the test scores such that the standard deviation is 100. Answer the following questions using a bell shaped distribution and the empirical rule for the math test scores The national average for the math portion of the college boards SAT test is 515. The college board periodically rescaled the test scores such that the standard deviation is 100. Answer the following questions using a bell shaped distribution and the empirical rule for the math test scores is te probability that the company sclected nas its colPO of the 8 states listed above? 19Do you think the government protects investors adequately? This question was part of the United States and Great Britain an online survey of investors under age 65 living i Financial Times/Harris Poll, October 1, 2009). The numbers of investors from the United States and Great Britain who answered Yes, No, or Unsure to this question are provided below Response Yes No Unsure United States 187 334 256 Great Britain 197 411 213 a. Estimate the probability that an investor in the United States thinks the governmentis b. Estimate the probability that an investor in Great Britain thinks the government is not c. For a randomly selected investor from these two countries, estimate the probability d. Based on the survey results, does there appear to be much difference between the not protecting investors adequately protecting investors adequately or is unsure the government is protecting investors adequately. that the investor thinks the government is not protecting investors adequately. perceptions of investors in the United States and investors in Great Britain regarding the issue of the government protecting investors adequately?Explanation / Answer
(a) Pr(an investor in US thinks the govt. not protecting investors adequately) = Number of people in US thinks as such/ Total number of US person surveyed = 334/(187 + 334 + 256) = 0.430
(b) Pr(In UK, investors thinks the govt is portection investors or not sure about that) = (197 + 213)/ (197 + 411 + 213) = 0.500
(c) Pr(From both conuntries an investor thinks govt not protecting investors adequetly) = Number of people in survey who thinks like that/ Total number of people in survey =
(334 + 411)/ (187 + 334 + 256 + 197 + 411 + 213) = 0.466
(d) No, as based on results, we can say there is not much difference between the perceptions of investors in the UK and UK regarding the issue of government protecting investors adequately.