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Discuss an example from every day life, your professional experience, personal life or sports where two variables are positively correlated and why; discuss a second example where two variables are negatively correlated and why.
Address which variable is dependent and which one is independent for each example and how one can benefit from developing a regression model between the two variables.
Supposing that there is no cost of entering the sweepstakes, find the expected value of the amount won for one entry. Determine the expected value if the cost of entering this sweepstakes is the cost of a postage stamp. Is it worth entering the cont..
At the .05 significance level, is there a difference in the mean number of calls per day between the two employees?
Discuss whether the percent distribution of the cross-tab and chi-square supports/does not support the researcher's hypothesis.
If new inspector measures 101 stampings with variance of 0.13 square inch, test at 0.05 level of significance whether inspector is making satisfactory measurements. Suppose normality.
A study 200 nurses found that of 125 females nurses, 56 had bachelor's degree; and of 75 male nurses; 34 had bachelor degrees. if a nurse is selected at random, find the probability that the nurse is a female nurse with a bachelor degree.
The dimension is supposed to be 224 mm and the variability of the manufacturing process is unknown. Is there evidence that the mean dimension is not 224 mm?
What is the probability there will be between 10 and 14 calls inclusive arriving at the company in the next 15 minutes?
What is the probability that between 5 and 10 firms, inclusively, purchase a Unix machine from Sun Microsystems?
The average monthly cost per household for groceries in kentucky is $625/mo with a standard deviation of $125/mo. The average age of the memebers in each of the households in Kentucky is 22.5 yr with a standard deviation of 5.175 yr. Which data se..
For each of the following, indicate whether or not you would expect it to have a strong seasonal component and why.
Find the test statistic . Find the standardize test statistic. decide whether the standardize test statist is in the rejection region and decide whether you should reject or fail to reject the null. Sample are random and independent. Claim u1 =u2,..
At the .05 significance level, can we conclude that the guideline is still reasonable?
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