**Only Two answers are needed please show the work need to learn prior to the Exam**

-- PART 2: Total Sampling Elements --

In this next portion of the assignment, you will use the Total Sampling Elements formula to help you determine the number of sampling elements you need for a particular research study. Recall that the TSE formula is:

Valid Sample Size = this is the total number of valid, complete responses you desire to analyze BCI = % of people in sample estimated to have bad contact information, meaning you never reach them NR = % of people who you have correct information for, but you simply never make contact with after multiple attempts REF = % of people who you do contact, but simply refuse to participate in your study NQ = % of people willing to participate but cannot because they don't actually qualify for the study INC = % of people who qualify and start the the study, but fail to complete important sections of the study meaning their response is essentially an incomplete

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SCENARIO 4:

I need a final, complete sample of 1,067 respondents for my survey. My client has provided me with a list of 200,000 e-mail addresses from their customer database to draw my sample. The client warned me that about 5% of the e-mail addresses are likely invalid.

Based on my own internal benchmarks, I expect about 85% of the e-mail invitations to simply go unread. However, because there is a $10 gift card incentive for a short survey, I expect only about 10% of people who see the survey invite to refuse the opportunity.

However, only 35% of the people who try to take the survey will actually qualify (customers only qualify if they have ever returned one of the company's products). Assuming people do qualify for the study, I estimate only 5% of them won't finish the survey (it only takes about 2-3 minutes to complete).

1. Total Sampling Elements = [answer here ]

SCENARIO 5:

I need a final, complete sample of 200 respondents for my survey. My client provided me with 100,000 telephone numbers of their current customers to use as my sampling frame. Previous validation efforts have confirmed that we can expect 95% of the phone numbers to be correct and active lines.

I am using a market research company that specializes in live telephone polling to collect the data. They have informed me that we can expect about 25% of people will at least answer the phone call. Among those people who pick up, 10% will agree to participate in the study.

Fortunately, the only criteria for qualification is that the person is a "current customer" of the company, so anyone who is willing to take the study also qualifies for the study. The telephone polling company told me that I can expect about 50% of the people who start the phone survey will complete the phone survey. *hint: carefully read how the information is presented in this scenario. Think carefully how this applies to using the TSE formula!

1. Total Sampling Elements = [answer here ]