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You need to fill in a table of five rows and three columns with numbers. All the row totals and column totals are given to you, and the numbers you fill in must add to these given totals. How many degrees of freedom do you have?
When trucks arrive at the Ambassador Bridge, each truck must be checked by customs agents. The times are exponentially distributed with a service rate of 10 per hour. What is the probability that a truck requires more than 15 minutes to be checked..
Suppose the IQ scores have a bell-shaped distribution with a mean of 104 and a standard deviation of 18. Using the empirical rule, what percentage of IQ scores are between 86 and 122?
Consider the standard normal distribution. a) Use the Z table to verify that q1 is approximately -0.67 and q3 is approximately 0.67. b) Find the interquartile range for Z, and explain what this means.
Define the sociological perspective or imagination, cite its components, and explain how they were defended by C. Wright Mills.
ph in the water is 7 at the .05 significance level. Her alternative hypothesis is that the water does not have a pH of 7. For which p-value will she fail to reject the null hypothesis?
The mean of a normal distribution is 400 pounds. The standard deviation is 10 pounds. a) what is the area between 415 pounds and the mean of 400 pounds?
Assuming that the Poisson distribution is a plausible model in describing variability of asbestos fiber counts in filters; derive a 95% confidence interval indicating the variability in the average number in asbestos fibers.
a two factory research is used to evaluate the effectiveness of a new blood pressure medicine. in this two factor study
Two sets, and 18% have three or more sets. If two households are chosen at random, what is the probability that at least one has a television set?
Using a significance level of 0.05 I want to conduct 3 hypothesis tests using the data below. I need to state my alternative and null hypotheses and test a claim about a proportion.
The probability that the patient enters a law suit is 0.9. What is the probability that the doctor makes an incorrect diagnosis and the patient sues.
Using the .05 level, what should the experimenter conclude? (a) Use the steps of hypothesis testing, (b) sketch the distributions involved.
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