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Hurricanes, redux. We first looked at the occurrences of hurricanes in and found that they arrive with a mean of 2.45 per year. Suppose the number of hurricanes can be modeled by a Poisson distribution with this mean.
a) What's the probability of no hurricanes next year?
b) What's the probability that during the next two years, there's exactly 1 hurricane?
The probability of a z falling between two points equidistant from the mean, one to the left of the mean and the other to the right og the mean is 99% what are the z ranges.
Create a histogram for these ages.- Create a stem-and-leaf plot for these ages. - Create a dotplot for these ages.
let x be a discrete random variable with possible values x ?1012 and probability function fx kx3 0.15 for x ?1012.a
1. A topological space (S, T ) is called perfectly normal iff for every closed set F there is a continuous real function f on S with F = f -1({0}).
questions1. compare and contrast internal and external validity. describe and give examples of research questions for
Use the data set for math education and conduct an ANOVA to see if there are any statistically significant differences with respect to problem solving total for students who have different categories of the concept of learning by themes (colcateg)..
a sample of 10 observations is selected from a normal population for which the population standard deviation is known
The company has a 0.10 chance of winning the contracts in both countries. What is the probability that the company will win at least one of these two prospective contracts?
which a correlation analysis or regression analysis could contribute to a better decision. The situation can be from a work, of general interest, or experienced in private life.
Identify the null and alternative hypotheses from the player's point of view. - Is there enough evidence from this month's data to reject the null hypothesis at the 5% significance level?
1 a sample of 100 elements produced a mean of 48 and a standard deviation of 8. the 99 confidence interval for the
Suppose that you perform a significance test regarding a population mean, and that the evidence does not warrant rejection of the null hypothesis.
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