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4. A simple random sample of 300 items is selected from a large shipment, and testing reveals that 4% of the sampled items are defective. The supplier claims that no more than 2% of the items in the shipment are defective. Carry out an appropriate hypothesis test and comment on the credibility of the supplier's claim 5.It has been claimed that 65% of homeowners would prefer to heat with electricity instead of gas. A study finds that 60% of 200 homeowners prefer electric heating to gas. In a two-tail test at 5% level of significance, can we conclude that the percentage who prefer electric heating may differ from 65%.
A crucial step is offering participants a food reward
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Write your own newspaper article for the study with at least one appropriate table or graph.
Use these data to test the null hypothesis of no difference in the use of sick days between younger and older adults - What do your results indicate
Use decision analysis tools discussed in class to determine what action the firm should pursue in order to minimize expected loss; either manual analysis or software is acceptable. Please also calculate the minimum expected loss.
A statistics instructor developed a special teaching method to reduce students' boredom in class. (Not that students are ever bored in statistics). It is known from previous research that on a scale of 0 to 100 (0 = not at all bored, 50 = kind..
What is the value of the test statistic and the chi-square table, the most accurate statement that can be made about the p-value
1. at the bottom left side of the applet set n equal to 10 and then check the animate box. now click on flip. record
Describe each r value in words
Decision Trees are graphic displays of the decision process. When do you feel it is appropriate to use decision trees?
What other factors besides price might be included in this equation and do you foresee any difficulty in obtaining these additional data or incorporating them in the regression analysis?
Identify the correct order of operations for calculation of basic math problems
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