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A Milwaukee television station, WITI-TV, conducted a telephone call-in survey asking whether viewers liked the new newspaper, the Journal Sentinel. On April 26, 1995, Tim Cuprisin, a columnist for the Journal Sentinel, wrote the following comment: "WITI-TV (Channel 6) did one of those polls which they admit are unscientific last week and found that 388 viewers like the new Journal Sentinel and 2,629 didn't like it. We did our own unscientific poll on whether those Channel 6 surveys accurately reflect public opinion. The results: a full 100 percent of the respondents say absolutely, positively not."
Is Cuprisin's comment justified? Explain.
Difference in haemoglobin concentration at enrolment between women with detectable peripheral malaria parasites and those without detectable parasites?
Management of a golf ball company has carefully screened and selected 12 dozen golf balls, and it is agreed that this sample contains 15 nonconforming balls (all for various cosmetic reasons).
State the hypotheses that you are going to test.
Explain the notions of mathematical differences, managerially important differences, and statistical significance. Can results be statistically significant and yet lack managerial importance.
Enter the following data into SPSS and calculate the correlation matrix for all four variables. Identify which correlations are significant and state and interpret your findings. Report significant correlation coefficients and p values.
What is the estimated multiple linear regression equation - calculate the F statistic and should the Null hypothesis be rejected at the 5% level of significance?
Plan the analysis
What is the company's labor hours productivity and what is its multifactor productivity and what is the percent change in the multifactor productivity if the initial process used is the one without the rework capability and is then replaced by the ..
Which is the explanatory variable and draw a scatterplot on your calculator and comment on the form, direction, and strength of the data.
List at least three qualitative attributes of the snack food about which they might want to ask consumers. Make sure at least one of them is nominal.
The program office budgets $30,000 per program review at the contractor's site. Your concern for "end of year" spending drills is that you have budgeted enough for the reviews
Consider the top 2-3 careers in Sales or Marketing you would like to enter one day. Do some research at places like Monster and compile some data for each of these career paths. In particular, collect salary information, experience and degree requ..
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