For testing the difference between two population proportions, the pooled proportion estimate is found by taking:
a. the proportion of successes from sample 1 plus the proportion of successes from sample 2.
b. the total number of successes in both samples divided by the total of both sample sizes.
c. the difference between the proportion of successes in each sample.
d. None of these choices.
Question 2
Which of the following will be reflected by deseasonalized time series?
a. Trend effects
b. Cyclical effects
c. Random variation
d. All of these choices are true.
Over nearly 30 years, humans removed many polar bears for a variety of reasons, from a population in
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E9-23 Prepare income statements Explain the difference in operating income