SOLVED

41) If we know the level of confidence, variability estimates, and the desired accuracy, there is a formula that allows us to determine: A) z B) the size of the sample C) the representativeness of the sample D) p or q E) e 42) Which of the following is the best definition of variability? A) it is the amount of dispersion in a data set containing interval or nominal data B) the difference between scores in the present sample and scores in a previous sample C) the amount of dissimilarity in ordinal data D) amount of dissimilarity (or similarity) in respondents’ answers to a particular question E) the amount of responses in one respondent’s answers to a particular survey question 43) Consider that we have nominal data and the responses are “Yes” or “No” to the question: “The next time you order pizza, will you order Domino’s?” Which of the following sets of responses shows the MOST variability? A) 99 percent say “Yes” and 1 percent say “No” B) 80 percent say “Yes” and 20 percent say “No” C) 70 percent say “Yes” and 30 percent say “No” D) 60 percent say “Yes” and 40 percent say “No” E) 51 percent say “Yes” and 49 percent say “No” 44) 95 percent of the observations under the normal curve fall within ________ times the sample error. A) + 1.64 B) + 1.96 C) + 2.58 D) + 0.95 E) + 1.95 45) What three factors are needed to calculate sample size? A) variability, desired accuracy, and level of confidence B) variability, desired accuracy, and population size C) accuracy, confidence level, and population size D) accuracy, population size, and costs E) variance, standard deviation, and dispersion 46) If we assume the “highest” amount of variability when estimating p and q, then p and q are ____ and ____ respectively. A) 50; 50 B) 1; 99 C) 0; 100 D) 1.96; 1.96 E) 2.58; 2.58 47) To cope with the realities of incidence rate and nonresponse, researchers should use: A) the sample adjustment formula. B) always increase their sample size by 10%. C) restrict themselves to the calculated sample size from the confidence interval formula. D) ensure the sample size is always above 500. E) ensure p and q are always equal to 50%. 48) An amusement park owner is considering a survey to determine customer preferences for a new water ride. The owner and the researcher discuss the concept of the level of accuracy. The owner accepts a level of accuracy of + 5 percent. Assuming that the survey finds that 70 percent of the survey respondents indicate they want the ride, what does having a level of accuracy of + 5 percent accuracy actually mean? A) that there will be a 5 percent chance that the owner will make the wrong decision as to whether not to build the new water ride B) that the real percentage of the park’s customers who prefer the new water ride falls between 0 and 5 percent C) that there is a 95 percent chance that the owner will make the right decision as to whether or not to build the new water ride D) that the real percentage of the park’s customers who prefer the new water ride falls between 65 and 75 percent E) that there is a 5 percent chance, + or -, that the owner will make the right decision 49) A packaged food company is looking at conducting enter the Canadian marketplace with its new line of frozen healthy after-school snacks. Before launching the product they want to determine what the best pricing strategy will be with their target market without the incurring the time or cost of a census. The research firm they hired suggested they subdivide the Canadian population into geographic areas. Given the diversity that exists across Canada, they suggested that they then select a random sample of the areas to ensure a representative sample. What form of sampling was the firm recommending? A) eeographic sampling B) random area sampling C) two-step area sampling D) stratified sampling E) stratified random sampling 50) York University wanted to see how much students graduating for their university valued their education. Although the university wanted to know who all students felt on average, the president wanted to be able to report to each of the Deans of the varying faculties. They would want to know if the responses varied depending on the degree the student obtained. This would help them with future plans by area of study. Given that the graduating classes per faculty varied greatly in size, what form of sampling would provide information to satisfy the president and the deans? A) proportionate stratified sampling B) judgment sampling C) disproportionate stratified sampling D) two-step area sampling E) complex random sampling