ST 350 HW #8 Fall 2017.pdf - WebAssign ST 350 HW#8 Fall 2017(Homework Current Score 16.5 31.5 Laurel Briggs ST 350 section 001 Fall 2017 Instructor

ST 350 HW #8 Fall 2017.pdf - WebAssign ST 350 HW#8 Fall...

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Current Score : 16.5 / 31.5 Due : Tuesday, October 24 2017 11:59 PM EDT 1.3/3 points | Previous AnswersThe Office of Student Services at UNC would like to estimate the proportion of UNC's 34,000 studentswho are foreign students. In their random sample of 50 students, 4 are foreign students. Unknown tothem, the proportion of all UNC students that are foreign students is 0.061. For each student, let x=1 ifthe student is foreign and let x=0 if the student is from the U.S.Question 1. Select the table below that depicts the datadistribution.Question 2. Select the table below that depicts the populationdistribution.X0 1Relative Frequency0.920.08X01Relative Frequency0.9390.061X01Relative Frequency0.0610.939X0 1Relative Frequency0.080.92 ST 350 HW #8 Fall 2017 (Homework) Laurel Briggs ST 350, section 001, Fall 2017 Instructor: Thomas Reiland WebAssign The due date for this assignment is past. Your work can be viewed below, but no changes can be made. Important! Before you view the answer key, decide whether or not you plan to request an extension. Your Instructor may not grant you an extension if you have viewed the answer key. Automatic extensions are not granted if you have viewed the answer key. Request Extension
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Question 3. Find the mean and the standard deviation of the samplingdistribution of the sampleproportion for a sample of size 50. 2.1.5/3 points | Previous AnswersThe National Center for Education Statistics reports that the proportion of college freshmen who returnto the same school for their sophomore year is 0.74. Suppose we select a random sample of 480freshmen from across the nation.Question 1. What is the expected value of the sampling distribution model for the proportion of 480freshmen that will return to the same school for their sophomore year?
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Question 2. What is the standard deviation of the sampling distribution model for the proportion of 480freshmen that will return to the same school for their sophomore year? Question 3. What is the probability that the proportion of these 480 freshmen that return to the sameschool for their sophomore year is less than 0.67(No Response)0.0002(Round to 4 decimal places) ?
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