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Choose a business problem that is based upon an experience from your place of work or home environment. Briefly describe the business problem and the research methodology that you would employ to gather data and test your hypothesis (which should also be stated). Describe the ethical considerations that you would need to make regarding the gathering, and use of, data for the purpose of your research. Indicate what special considerations you might need to make when gathering primary data.
The average age of the students in the sample was 23 with a standard deviation of 3.5: a) Formulate the hypotheses for this problem.
Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. Here are data on the "penetrability" of the same type of soil at 2 levels of compression.
Determine what analysis would you do on each problem (i.e., one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
An accepted standard deviation for LSAT scores is 125. A random sample of 25 scores had an average of 1,375. Assume a significance level of 0.05. State the appropriate null and alternative hypotheses. Calculate the p-value to test the hypotheses.
How long do new batteries last on a camping trip? A random sample of n1 = 42 small camp flashlights were installed with brand I batteries and left on until the batteries failed.
Derive the standard error of proportion, the margin error and the 95% confidence interval for the proportion indicating preference to flirting.
Plot fitted values against residuals. Does this plot point out any problems with homoscedasticity?
1) What is correlation? 2) What is an example of two variables that are likely to be correlated because they are both changing over time?
What is the probability that the average IQ, from a random sample of 64 individuals, is greater than 102?
What is your conclusion? Are the two variables independent?
Construct a probability for the number of students in the sample who watch soap operas.
Suppose that a study based on a sample from a targeted population shows that people at a pizza restaurant are hungrier than people at a coffee shop. Make an interference based on the results of the study.
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