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Homework 3.9

Homework 3.9

Q Question 1. Version 1*/1. Score: 2/2 Suppose you compute a confidence interval with a sample size of 60. What will happen to the confidence interval if the sample size increases to 95? Question 2. Version 1*/1. Score: 2/2 Suppose you compute a confidence interval with a sample size of 53. What will happen to the confidence interval if the sample size decreases to 49? Question 3. Version 1*/1. Score: 2/2 Suppose you compute a 98% confidence interval. What will happen to the confidence interval if you decrease the confidence level to 94%? Question 4. Version 1*/1. Score: 2/2 Suppose you compute a 94% confidence interval. What will happen to the confidence interval if you increase the confidence level to 97%? Question 5. Version 1*/1. Score: 13/13 Part 1 of 5 A sample of 30 high school basketball players was taken and whether or not they plan to play basketball in college was recorded. A 95% confidence interval for ? is (68%, 74%). Note: This is computer-graded so use exact wording from the problem above. Remember an individual is ONE of something. The individual object in the study was a randomly selected Correct. Part 2 of 5 What was the variable information recorded for each object in the study? This is computer-graded so use exact wording from the problem above. The variable information was whether or not they Correct Part 3 of 5 State the statistical interpretation of the confidence interval in the context of this problem. Correct the Correct of Correct high school basketball players that plan to play basketball in college is between Correct% and Correct% Part 4 of 5 What is the symbol and value of the point estimate for ?? Correct = Correct% What is the margin of error for the given interval? Correct% Part 5 of 5 Fill in the boxes below to show the relation on the number line between the numeric values of the point estimate and the interval estimate for ?. <--------A--------------B--------------C-------->

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1.The confidence interval will narrow. 2.The confidence interval will widen. 3.The confidence interval will narrow. 4.The confidence interval will widen.