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1. A national study found that 44% of college students engage in binge drinking (5 drinks at a sitting for men, 4 for women). A professor surveyed a random sample of 244 students at his college.
What is the probability that less than 96 of them admitted to binge drinking in the past week?
2. Suppose the weights of college textbooks are normally distributed with a population mean of 4 pounds and a population standard deviation of 1.2 pounds. Suppose randomly sample and weigh 16 textbooks. Answer the following questions:
What is the probability that a given (i.e. one) textbook weighs more than 5.5 pounds?
Imagine the distribution of all possible samples averages of textbook weights (with n=16). What is the weight that separates the lightest 25% of sample averages from the heaviest 75% of sample averages?
Use Appendix F below to locate the value of t under the following conditions. The sample size is 15 and the level of confidence is 95 percent.
Write a statistical laboratory report using the guidelines in the assigned article, "How to Write a Statistical Report."
in the november 1990 issue of chemical engineering progress a study discussed the percent purity of oxygen from a
city records indicate that the average age of the houses on the west side of town is 43 years with standard deviation
Given following financing project being considered by venture film, determine critical path probability of completion by 17 weeks.
What kinds of plots are useful in data screening? What can you do if your data do not meet the assumptions of your statistic?
Conduct a Binomial test using the ‘WEAPONTYPE' variable to test this claim. Produce the relevant output and write a Binomial test report based on your output in the style presented in the course materials.
The samples do indicate that university A's students are younger than university B's; but is the difference significant at the 1% level?
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
a fair die is thrown until the sum of the results of the throws exceeds 6. the random variable x is the number of
A random sample of 40 days last year showed that Larry Clark made an average of 4.77 calls per day. For a sample of 50 days George Murnen made an average of 5.02 calls per day. At the .05 significance level, is there a difference in the mean numbe..
a group of 5 boys and 15 girls is lined up in random order .a what is the probability that the person in the 4th
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