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Suppose a garage has 2 gates one with Poisson distribution of 3 cars/hour and the other gate 4 cars/hour. What is the probability of 3 car entering the garage in a given hour?
According to the National Football League, the average salary for players for the 2010 season was about $1.9 million while the median salary is around $770,000. Why are both numbers reported? What might the difference between the two statistics me..
Perform all pairwise comparisons among the three programs, using a Tukey adjustment and an overall significance level of 0.05, then interpret all your results.
The resort's historical climate data suggests that the probability of a good winter with lots of snow during any given year is 40%.
The average family size was reported as 3.18. A random sample of families in a particular school district resulted in the following family sizes: 5 4 5 4 4 3 6 4 3 3 5 6 3 3 2 7 4 5 2 2 2 3 52
If the population mean was $1047 in the previous year, does the evidence suggest that expenditure this year has significantly changed?
I never understood the concept of the Empirical Rule and Chebyshev's Rule. Can you explain it to me and provide me with some sample problems please?
21st Century Insurance Company claims that telephone calls for policy holder information are answered in at most 3 minutes. A random survey of 36 phone calls results in the mean 3.3311 and standard deviation 2.1788.
The sampled results show that sample mean and standard deviation were $52.00 and $17.50, respectively. Use this information to create a 95% confidence interval for the mean.
SAT verbal scores are normally distributed with a mean of 412 and a standard deviation of 90. Use the Empirical Rule to determine what percent of the scores lie between 412 and 592.
At α = .05 in a left-sided test, find the β risk and power assuming that the true mean is really 380 square feet per gallon. (b) Construct a left-sided power curve, using increments of 5 square feet (400, 395, 390, 385, 380).
Does there seem to be any difference in the effects of the antibiotics on clearance of otitis media? Express your results in terms of relative risk (RR). Consider separated analyses for unilateral and bilateral cases. Also consider and analysis co..
Estimate the difference in mean travelling time to campus by taxi and bus by constructing a 90% confidence interval.
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