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Refer to the Baseball 2005 data, which reports information on the 30 major league teams for the 2005 baseball season.
a) Select the variable team salary and find the mean, median, and the standard deviation.
b) Select the variable that refers to the age the stadium was built. {Hint: Subtract the year in which the stadium was built from the current year to find the stadium age and work with that variable.) Find the mean, median, and the standard deviation.
c) Select the variable that refers to the seating capacity of the stadium. Find the mean, median, and the standard deviation.
By constructing null and alternative hypotheses, computing critical values, and comparing test statistic to critical value.
For value 10,40,20,50 and 40, value of arithmetic mean is? Simplest measure of dispersion is the Standard deviation, variance, Quartile deviation.
Find the mean and standard deviation of X, the number of students in class, who will develop influenza.
At α = 0.01 level of significance, test the hypothesis that these data can be described by a Poisson pdf.
Cores on two tests have a bivariate normal distribution; and that correlation of 2 scores is 0.8. Determine the probability that sum of the student's scores on 2 tests will be greater than 200?
Explain the logic of what you have done, writing as if you are speaking to someone who has never heard of correlation (but who does understand the mean, deviation scores, and hypothesis testing);
What control limits should be applied to his sample?
How strong is the evidence against the company's claim? Based on these data, the P -value of the appropriate test
What is the probability that a visually impaired student gets less than 6.9 hours of sleep?
What are the expected value and variance of the following probability distribution?
Would the null hypothesis be accepted or rejected in this case?
Let X 1 , X 2 , X 3 , X 4 be a random sample from a Poisson distribution with parameter λ and let Y = X 1 + X 2 + X 3 + X 4 . You decide to test λ = 1.60 versus λ
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