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Note : Decide ? rst whether data are quantitative or qualitative. Unless mentioned otherwise, no assumption has been seriously violated, and therefore the appro-priate test should be selected from among t , F , or c2 tests. Specify the precise form of the test. For example, specify that the t test is for two population means with related samples, or that the c2 test is for two variables, or that the F test is for repeated measures.
Another investigator criticizes the design of the previous study, saying that high school students should have been randomly assigned to either the special training condition or a control condition and tested just once at the end of the study. Subsequently, she conducts this study.Another investigator criticizes the design of the previous study, saying that high school students should have been randomly assigned to either the special training condition or a control condition and tested just once at the end of the study. Subsequently, she conducts this study.
suppose small aircraft arrive at a certain airport according to a poisson distribution with a rate of 4 per hour. find
Among the contestants in a competition are 35 women and 20 men. If 5 winners are randomly selected, what is the probability that they are all men?
If the population standard deviation is 18.8 days, find the 90% confidence interval for the average number of days worked by all employees who are paid through payroll departments.
in 1996 it was estimated that about 72 percent of all us households were cable tv subscribers. newstime magazines
what is the standardized score of a mean of 230 taken from a sample of 25 from a normal population that has a mean of
A statistics instructor believes that 50% of his students are male. One of his students thinks there are more males than females taking statistics so he decides to conduct a random survey of past courses. He found that 83 of 150 students were ma..
let x be the amount of time in minutes that a particular san francisco commuter must wait for a bart train. suppose
A random sample of 15 customers is selected, and the results are as follows: 8.02 4.08 5.79 8.73 5.47 5.64 8.01 10.49 8.35 5.9 9.66 9.91 3.82 6.68 6.17 a) calculate arithmetic mean, median, mode, first quartile and third quartile.
What features of the distribution can you see in both the histogram and the boxplot?- What features of the distribution can you see in the histogram that you could not see in the boxplot?
how can standardized z-scores be used to compare people across different contexts such as the batting averages of two
Let P be the transition matrix of an ergodic Markov chain. Let x be any column vector such that Px = x. Let M be the maximum value of the components of x. Assume thatxi = M . Show that if pij > 0 then xj = M . Use this to prove that x must ..
Which is the estimated or dear proportion of defective cups in the population?
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