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Past surveys reveal that 30 percent of tourists going to Las Vegas to gamble spend more than $1,000. The Visitor's Bureau of Las Vegas wants to update this percentage.
The new study is to use the 90 percent confidence level. The estimate is to be within 1 percent of the population proportion. What is the necessary sample size?
The Bureau feels the sample size determined above is too large. What can be done to reduce the sample? Based on your suggestion, recalculate the sample size. (Hint: Use an allowable error in the range of 0.01 to 0.05)
Identify the independent and dependent variables. Perform a regression analysis on the data.
It was reported that approximately 45% of all university professors are extroverted. Suppose you have classes with 6 different professors.
Analyze a publicly traded company's financial statements for the prior five years. Include the following items as supplemental schedules to the analysis, prepared as individual worksheets
Drawing on one of your interests in the study of criminal justice, develop three hypotheses that can be tested using t-tests. Why do you think it would be interesting or important to test these hypotheses?
What parametric test could be used to test for the effect of linoleic acid on SBP? Perform the test in Problem 1, and report a p-value. What nonparametric test could be used to test for the effect of linoleic acid on SBP?
A physician's health study of the effectiveness of aspirin in the reduction of heart attacks was begun in 1982 and completed in 1987. Of 11,037 male medical doctors in the United States who took one 325 mg buffered aspirin tablet every other day
a college graduate school president is interested in knowing what proportion of applicants would like to be accepted
If a random sample of 36 lobster fishermen is selected, what is the probability that their average catch is less than 31.5 pounds? Assume the distribution of the weights of lobster is normal.
a pew internet and american life project 2007 report stated that 74 of teenage boys posted their photo on their online
define basic and applied. your definitions should highlight the primary distinctions between the two types of research.
Suppose that the probability that a new medication will cause a bad side effect is 0.03. If this medication is given to 150 people, what is the probability that exactly three of them will experience a bad side effect.
The daily numbers of calls received by the Internal Revenue Service office in July are shown below:
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