A sociologist is interested in the views of employed adult women about governmen

Question

A sociologist is interested in the views of employed adult women about government funding for day care. She obtains a list of the 520 members of a local business and professional women's club and mails a questionnaire to 100 of these women selected at random. Only 48 questionnaires are returned. Identify the population in the study What is the sample? What is the sampling frame? Are there any potential sources of bias in selecting the sample? Consider the following population of N=5 students, (Alison, Kaelyn, Michael, Philip, Stanley). Suppose you use simple random sampling to draw a sample of size n=3. How many possible samples of size 3 can we select? What is the chance that you draw only boys, ie., Michael, Philip, and Stanley? Consider a population of N=5 units, labeled A, B, C, D, E. Consider a simple random sampling design with a random size n=3. List every possible sample of size n=3. If this population is sampled using random sampling, what is the probability that the sample (A, B, C) will be selected? We wish to conduct a survey to estimate the proportion, p, of individuals in the population who have tested positive for HPV. A simple random sample of 1000 individuals is chosen. Each person is then supplied with a coin and given the following instructions: Flip the coin in secret, if the coin comes up heads, answer question A below. If it comes up tails, answer question B. To you knowledge, are you infected with HPV? Is your zodiac sign included in the following set? (Cancer, Leo, Virgo) How many people would expect to answer A, and how many would you expect to answer B? Of the people who answered B, how many people would you expect to answer "yes"? Using you answer to (b) estimate the percentage, p, of people in the population that are carriers of HPV and are aware of their condition? What type of bias is this type of question design aiming to mitigate?)

Explanation / Answer

1.

a. Population: 520 memebers of business and professional women's club

b. Sample:48 questionaires that are returned

c. Sampling frame:100 women to whom questionnaires are mailes

d.yes, since the reply to the questionnaires might not be random in behaviour and biased towards a particular set of women(particular region or profession)

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