1) A food distributor is being sued for racial discrimination
because 12% of newly hired candidates are not white when 53% of all
applicants were not white. You plan to use hypothesis testing to
determine whether there is significant evidence that the company's
hiring practices are discriminatory.
Part A: State the null and alternative hypotheses
for the significance test. (2 points)
Part B: In the context of the problem, what would
a Type I error be? A Type II error? (2 points)
Part C: If the hypothesis is tested at a 1% level
of significance instead of 5%, how will this affect the power of
the test? (3 points)
Part D: If the hypothesis is tested based on the
hiring of 1,000 employees rather than 100 employees, how will this
affect the power of the test? (3 points)
2) A manufacturer of a new medication on the market for Alzheimer's
disease makes a claim that the medication is effective in 65% of
people who have the disease. One hundred eighty individuals with
Alzheimer's disease are given the medication, and 115 of them note
the medication was effective. Does this finding provide statistical
evidence at the 0.05 level that the effectiveness is less than the
65% claim the company made? Make sure to include parameter,
conditions, calculations, and a conclusion in your answer.
1) A food distributor is being sued for racial discrimination because 12% of newly hired candidates are not white when 53% of all applicants were not white. You plan to use hypothesis testing to deter...
A food distributor is being sued for racial discrimination because 12% of newly hired candidates are not white when 53% of all applicants were not white. You plan to use hypothesis testing to determine whether there is significant evidence that the company's hiring practices are discriminatory. Part A: State the null and alternative hypotheses for the significance test. (2 points) Part B: In the context of the problem, what would a Type I error be? A Type II error? (2...
ESAND ABUSES 1 Uses Hypothesis Testing Hypothesis testing is important in many different fields because it gives a scientific procedure for assessing the validity of a claim about a population. Some of the concepts in hypothesis testing are intuitive, but some are not. For instance, the American Journal of Clinical Nutrition suggests that eating dark chocolate can help prevent heart disease. A random sample of healthy volunteers were assigned to eat 3.5 ounces of dark chocolate each day for 15...