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Reflect on correlation and regression. Provide a plausible research question in the field of education that implies a bivariate correlation or regression. Identify your research question, your research (alternative) hypothesis, and your null hypothesis. Then, revise the question and hypotheses to reflect plausible research in which you would use a t test. Identify your research question, your research (alternative) hypothesis, and your null hypothesis. Also, identify your independent and dependent variable.
Exam is given to 20 randomly chosen students and their average length of t time needed to finish exam was 54 minutes with standard deviation of 5.99 minutes. Test instructor's claim at the 0.05 level of significance.
The mean annual salary paid to all employees in a company was EURO 30.000. The mean annual salaries paid to male and female employees of the company were EURO 32.000, and 24.000, respectively. Determine the percentage of males and females employed..
Find the average age at which people will experience their first cardiac incident, given that 17% of all initial cardiac incident victims are younger than 50. Please, interpret the result.
What is the probability that the debt for a borrower with good credit is more than $18,000?
A biologist has found the average weight of 12 randomly selected mud turtles to be 8.7 lb with standard deviation 3.6 lb. find a 90% confidence interval for the population mean weight of all such turtles.
Evaluate the performance of this decision.
Explain the terms parameter and statistics. Make sure the concepts of population and sample are included in the definitions.
If, 20 patients improved, 7 declined, and 3 remained the same, assess whether or not patients undergoing this treatment are showing significant change from baseline to 3 months afterward. Report a p-value.
Using Sally's estimate of demand that follows, how many T-shirts should she produce for the upcoming event?
If Kim expects to use phone for 21 hours per month, which plan must she choose?
Two mating parts have critical dimensions x1 and x2 as shown below. Assume that x1 and x2 are normally distributed with means 1 and mean2 and standard deviations s1 = 0.400 and s2 = 0.300.
Will you reject your null hypothesis that all population means are equal or will you not reject? Choose the best answer from the options below.
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