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A correlation coefficient has an associated probability value of .02 then;
1. The results are important
2. The hypothesis has been proven
3. We should accept the Null hypothesis
4. There is only a 2% chance that we would get a correlation this big (or Bigger) if the null hupothesis were true
Use descriptive statistics to summarize the data from the two studies. What are your preliminary observations about the depression scores?
The delivery times and the number of cases delivered were recorded in the delivery file: Develop a regression model to predict delivery time, based on the number of cases delivered.
provide a different example for each of the following types of variables from your work or home lifea a nominal level
Distances from the past year and carry out a hypothesis test for its suspicion. State the null hypothesis and the alternative hypothesis that it would use for this test.
a store wishes to predict net profit as a function of sales for the next year. the following table gives the years 1998
If the sides of the square are lengthened by 5cm, the area becomes 144cm^2. Find the length of a side of the original square.
The following data represents the running time of films produced by 2 motion picture companies. Assume these are independent samples
Residents of Mill River have fond memories of ice skating at a local park. An artist has captured the experience in a drawing and is hoping to reproduce it and sell framed copies to current and former residents.
Test the hypothesis that the dogs did significantly better than what would be expected with random guessing.
A sample of 40 ovservations is selected from one population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observers is selected from a second population.
question suppose that a volcano is erupting and readings of the rate rt at which solid materials are spewed into the
Distribution and the method of moments estimators of the parameters are alpha(hat)= 5.23 and lambda(hat) = 21.3. Find an asymptotic 95% confidence interval for alpha.
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