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A sample of 300 urban adult residents of a particular state revealed 63 who favored increasing the highway speed limit from 65 to 75 mph, while a sample of 180 rural residents yielded 75 who favored the increase. (HINT: Z Test for Difference in Two Proportions)
Does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? Let p1 refer to the urban population.
To evaluate average annual expenses of students on books and class materials sample size 36 is taken.
The Republican party is interested in studying the number of Republicans that might vote in a particular Congressional district. Assume that the number of voters is binomially distributed by party affiliation (either Republican or not Republican).
Ski Resorts of Vermont, Inc. is considering a merger with Gulf Shores, Inc. of Alabama. The board of directors surveyed 50 stockholders concerning their position on the merger.
Use Excel and the data to test whether the mean alcohol expenditures for UCM students is equal to that of SBU students using a 1 % level of significance.
Using the z table in Table E of Appendix C, what are the critical values for a two-tailed test when a = 0.03 .
Chi-square test for independent attributes - Are the opinions on the tax cut proposal independent of party affiliation? Use a = 0.01
What is the probability that there will be more than three trucks either being loaded or waiting?
Design a Linear programming problem for the flair Furniture Company and find the combination of tables and chairs that the company must produce to maximize profits.
Hamburger Joe's sells the best burgers in town. The variable unit cost for making one burger is $.97. The fixed cost of making burgers for 12 months will be a total of: $140,000.
Create a 95% confidence interval for the population mean days absent for sickness based on this sample. Select the answer closest to your results.
Assume that a single radar unit used to detect incoming missiles has a probability of 0.90 of correctly detecting an incoming missile attack.
Find a 98% confidence interval for the mean number of days required for successful completion of physical therapy for patients in the average group. Discuss the results.
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