a. A parent group examines 25 randomly selected PG-13 movies and 25 randomly selected PG movies and records the number of sexual innuendos and curse words that occur in each. They then compare the...


a. A parent group examines 25 randomly selected PG-13 movies and 25 randomly selected PG movies and records the number of sexual innuendos and curse words that occur in each. They then compare the number of sexual innuendos and curse words between the two movie ratings.


b. A sample of 504 patients in early stages of Alzheimer’s disease is divided into two groups. One group receives an experimental drug; the other receives a placebo. The advance of the disease in the patients from the two groups is tracked at 1-month intervals over the next year.




May 26, 2022
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