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What is the paired samples T-Test and what is used for? What are the advantages of this statistical test?
If a company employs n salespersons, its gross sales in thousands of dollars may be regarded as a random variable having a gamma distribution with α = 80√n and β = 2.
The dependent variable is "Negat" (how many time the mother gives negative feedback to her child during the data collection protocol)
In a random sample of 80 items, the defect rate is 5% but the manager claims that this is only a sample fluctuation and production is not really out of control. At the 0.01 level of significance, does the data provide sufficient evidence that the ..
If we assume that the lifetime of this type of bulb has a standard deviation of 400 hours, can we conclude at the 5% significance level that the claim is true.
(a) Determine the probability that it will be cloudy on the next day, Thursday. (b) Determine the probability that it will be cloudy on Friday.
If she serves 9 times, what is the probability that she gets exactly 3 successful first serves in? Assume that each serve is independent of the others.
Sexual harassment at middle and high schools. A nationally representative survey of students in grades 7 to 12 asked about the experience of these students.
Using the Census data, the OH Registry of Motor Vehicles reveal the subsequent about the Autos owned by the 10 families residing in Smallville.
Consider a hypothesis testing problem where the null and the alternative hypotheses are defined as
Determine a 95% confidence interval for the true proportion of the given population that smokes.
suppose we are comparing the variability in healthcare costs from one state to another in the us. for state 1 the
Let T ~ gamma (20, 0.0002) be the total operating time for the units described in Exercise. Use the m-function for the gamma distribution to determine.
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