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According to Chebychev's theorem, what percentage of a distribution will be within k = 3.2 standard deviations of the mean? (Give your answer correct to one decimal place.)
what is the method to prove a cumulative distribution function of frechet distribution?complete
A group of students collected data at the Cedar Point amusement park and reported that the "wait time" to ride the "Top Thrill Dragster" roller coaster is consistently distributed within a range of 40 minutes to 90 minutes.
1 does correlation equal causation? does the strength of correlation depend on the direction of the relationship? what
Sampling distribution for the sample mean for a sample of size 160. This looks even more like a normal curve. This looks almost exactly like a normal curve. What have we seen from the above example?
A statistics professor plans classes so carefully that the lenths of her class are uniformly distributed between 50.0 and 52.0 minutes. Find the probability that a given class period runs less than 51.5.
What is the F critical value to be used at the 0.05 level of significance with 7 numerator degrees of freedom and 12 denominator degrees of freedom?
The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
A psychiatrist hires you to study whether her clients self-disclosed more while sitting in an easy chair or lying down on a couch. All clients had previously agreed to allow the sessions to be videotaped for research purposes.
What is the probability that a red ball will be chosen? If we randomly select 5 balls with replacement, what is the probability distributon of x-the neumber of red balls in the sample?
How would you determine which test would be appropriate to use? What characteristics of the problem would you use to determine which hypothesis test you should use? Explain your answer.
the number of books checked out at a public library by a sample of eight primary school children were recorded6 4 5 7 5
For its validity, all hypothesis testing depends heavily on the assumption that the sample that is used was drawn using probability sampling techniques.
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