g- 16% D Sun 1:20 A lake a Test christina cognato secure https://www.maths.com/S
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g- 16% D Sun 1:20 A lake a Test christina cognato secure https://www.maths.com/Student/PlayerTest.aspx?testide 168814118¢ervinayes; MATH 1016-01 Fall 2017 christina ato 10/15/17 1:20 AM Ch Test: Test 1: Ch 1-3 Time Remaining: 00:48.07 Submit Test This Question: 1 pt 3of12(0complete) This Test: 12 pts possible Phy ne A company has been rating television programs for more than 60 years. It uses several sampling procedures, but its main one is to track the viewing pattems of 20,000 the United States. Complete parts (a) and (b)below. What strata are used in the sample? Choose the correct answer below. households. These contain more than 45,000 people and are chosen to form a cross section of the overall population. The households represent various locations, ethnic groups, and income brackets. The data gathered from the sample of 20,000 households are used to draw inferences about the population of all households in Tests 0 A. The television ratings O B. The various sampling procedures and viewing patterns O C. The number of households and people that are chosen ntents D. The various locations, ethnic groups, and income brackets that are represented Why is it important to have a stratified sample for these ratings? Choose the correct answer below. cces Libra, O A. Stratified sampling ensures that only households in the us are sampled ption or se O D. Stratified sampling ensures that all of the members of o O B. O C. Stratified sampling ensures that the television ratings are accurate. Stratified sampling ensures that each segment of the population is represented. one or more groups are used Click to select your answer 0 of oo Chapter 1 Pre-Test 15Explanation / Answer
Solution:
=> option D. The various locations, ethnic groups, and income brackets that are represented .
=> option C. Stratified sampling ensures that each segment of the population is represented.
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