Is Alex’s Sampling Frame going to perfectly represent the Population?

.Read the following prompt and answer the corresponding questions. Copy the questions into a word document and write your response question Alex has been contracted by the Los Angeles police department to study the factors that may influence Job Satisfaction among the law enforcement officers of the LA PD. The department provides Alex with a list of phone numbers for all officers in the department. The list contains the names and phone numbers of all 10,000 LA PD officers. Alex is informed that all of the officers in the LAPD have been informed of the study and its importance, have been encouraged to participate, and have been assured confidentiality. Alex plans to draw a probability sample of 500 officers to interview via a phone survey. What is the populationfor Alex’s study? What is the list of phone numbers that Alex received actually called? Is Alex’s Sampling Frame going to perfectly represent the Population? Give a reason for your answer How many phone numbers are on Alex’s sampling frame? Why might Alex be happy that “all of the officers in the LA PD have been informed of study and its importance, have been encouraged to participate, and have also been assured confidentiality”. Would it be a good choice for Alex to conduct a “Cluster Sample”? Suppose that Alex wants to ensure that his sample exactly matches the population in terms of race/ethnicity. He also wants to use a Probabilitysampling design. The police department is 17% African American, 20% Hispanic American, 53% White American, and 10% Other. 7A. What sampling design should Alex use to ensure that his sample matches this demographic profile, if he happens to know each officer’s race/ethnicity beforehand? 7B. What sampling design should Alex use to ensure that his sample matches this demographic profile, if he does not know each officer’s race/ethnicity beforehand? Why would Alex want to use a Probabilitysampling design? Why would he not want to use a Non-Probability sampling design? Suppose that Alex finds that officer age has a positive effect on job satisfaction but that the effect is not statistically significant. What should Alex concludeabout the effect of age on job satisfaction in his population of interest? Suppose that before beginning the study or collecting the sample Alex calculates the Standard Error and finds that it will be (+/-) 5%. Alex decides that the margin of error is too large. In what very simple way, can Alex change his research design in order to reduce the margin of error?

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