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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.
Data analysis must be completed using a statistical software package - either Statistix for Windows, with the MegaStat add in, SPSS, SAS, R or any other legitimate software package.
Which of the following would have a binomial distribution and evaluate the binomial coefficient
Mention the critical value of test statistic (Or give the p-value of the test.)
Determine the probability in big class that both sections are covered? Only one section? Neither section? Determine the expected number of sections covered?
Do students tend to improve their SAT Mathematics (SAT-M) score the second time they take the test? A random sample of four students who took the test twice received the following scores
Construct the 90% confidence interval for the true population proportion of all voters in the state who favor approval.
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? What is the p-value?
What happens to the probability of getting exactly 50% heads?
At the .05 level of significance, is there evidence of a difference in variability in the shipping time between the two outlets? What decision should the carpet manufacturer make?
Find the critical value for different types of sample size and level of significance:
Make a histogram for the r probability distribution.
At the 0.10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
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