Question

Problem 3. (16 points) Find the Z-score for a normal measurement that satisfies each of the following statements. (a) The point z with 11 percent of the observations falling below it. Z= (b) The closest point z with 44 percent of the observations falling above it. Note: You can earn partial credit on this problem. preview answers Problem 4. (17 points) A random sample of n = 80 in-coming college freshmen showed that 32 were planning to bring a car with them to campus next fall. Suppose that we are interested in forming a confidence interval at 90 percent for the proportion of all in-coming college freshmen who are planning to bring a car to campus next fall, Where appropriate, express your answer as a proportion (not a percentage). Round answers to three decimal places. (a) The estimate is: (b) The standard error is: (c) The multiplier is: Note: You can earn partial credit on this problem. preview answers

Answer 1

my dear student as per HOMEWORKLIB RULES I have solved the first one. Thank you.