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A local newspaper wanted to gather information about house sales in the area. It distributed 25,000 electronic surveys to its readers asking questions about house sales in the past 6 months. Of the surveys sent out, 3.2% were returned. The results found that 92% of people did not sell their house in the past 6 months and 85% of people would expect a loss if they sold their house. The writer wants to use these results to conclude that the housing market is declining, and we are headed for a recession.
A. Explain the bias and sampling error in this study. B. Should the writer conclude that the housing market is declining based upon this data? C. Why or why not?
Consider some decision-making situations in any aspect of Hospital Administration, and describe two or more population variances are important.
In Major League Baseball there are five teams in the Western Division of the National League: Arizona, Los Angeles, San Francisco, San Diego, and Colorado. How many different orders of finish are there for these five teams?
Jill wants to do her MBA in Statistics at a B.C. university. She applies to two universities that offer post-graduate degrees in Statistics.
An entomologist is studying the effect of a chemical sex attractant (pheromone) on insects. Several insects are released at a site equidistant from the pheromone under study and a control substance.
A college is considering making the purchase of a laptop computer a requirement for some of its programs. In the past, only 20% of students owned laptop computers. A random sample of 300 students revealed that 77 of them had laptop computers
What is the conditional probability that a student likes gospel music if we know that he or she likes country music and what is the conditional probability that a student who does not like country music likes gospel music?
As a part of the editorial a random sample of 315 households showed 260 own pets. Does this data disagree with the Pet Food Dealers Association data? Use a 0.10 level of significance.
Bill heats his house with natural gas. The gas usage is measured in therms (T). In January of 2007 he used 125 therms over 34 days (D) and the average temperature (T) was 49 degrees farenheit.
Was there any difference in the nurses' preference in brand (α = 0.05)? Show all necessary components of a full hypothesis test, including a source table.
Whenever the calculated value of t is equal to or greater than the tabled value of t, for a given number of degrees of freedom, then
Promotion occurs on average every 10 days in a large corporation. What is the probability that the next promotion will occur within:
Determine the coefficient of correlation. Interpret the relationship between BAC and age using the correlation coefficient. Determine the coefficient of determination. Interpret.
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