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An enterprising art historian recently started a new business: the production of walking-tour audiotapes for use by those visiting major cities. She originally pro- duced tapes for eight cities: Paris, Rome, London, Florence, Jerusalem, Washington, New York, and New Haven. A test was carried out to determine whether all eight tapes (featuring different aspects of different cities) were equally appealing to poten- tial users. A random sample of 160 prospective tourists was selected, 20 per city. Each person evaluated the tape he or she was given on a scale of 0 to 100. The results were analyzed using one-way ANOVA and included SSTR = 7,102 and SSE = 10,511. Are all eight tapes equally appealing, on average? What can you say about the p-value?
a corporation creates a sinking fund in order to have 980000 to replace some machinery in 9 years. how much should be
Compare two models. Model #1 has an r-squared of .25 and an adjusted r-squared of .10. Model #2 has an r-squared of .20 and an adjusted r-squared of .14. Given this information, what model should you use?
Tweleve cases of leukemia are reported in people living in a particular census tract over a 5 year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cancer incidence rates?
refrigerant 134a undergoes a process for which the pressure-volume relation is p?n constant. the initial and final
testing for population mean.bookstores like education one reason being that educated people are more likely to spend
what is a research question that you would like to answer? write the null and research hypotheses. would you use a one-
a bottled water plant utilizes a production process designed to fill bottles with 20 ounces of water. the population of
Assume that a decision maker wants to estimate a population proportion with 90% confidence and a margin of error of ±0.03. The decision maker has obtained a pilot sample of 10.
weinstein mcdermott and roediger report that students who were givne questions to be answered while studying new
the corporate lawyer a magazine for corporate lawyers would like to report the mean amount earned by lawyers in their
Find the margin of error for the poll taken this year if one wants 99% confidence in the estimate of the percent of adults who are fans of the sport.
Which of the 4 methods of data collection is involved when a person counts the number of cars passing designated location on the Los Angeles freeway system?
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