Advanced Placement (AP), 21.05.2021 20:10 kimloveswim
A researcher has conducted a survey using a simple random sample of 225 elementary teachers to create a confidence interval to estimate the proportion of elementary teachers favoring the addition of a soda machine to the cafeteria. Assume that the sample proportion does not change. The researcher now decides to survey a random sample of 25 teachers instead of 225 elementary teachers. Which of the following statements best describes how the confidence interval is affected by this change?
The width of the new interval is about the same width as the original interval.
The width of the new interval is about twice the width of the original interval.
The width of the new interval is about one half the width of the original interval.
The width of the new interval is about one third the width of the original interval.
The width of the new interval is about three times the width of the original interval.
Answers: 1
Advanced Placement (AP), 22.06.2019 11:30
Mr. polanski likes the cost of an hmo plan available in his area, but would like to be able to visit one or two doctors who aren't participating providers. he wants to know if the point of service (pos) option available with some hmos will be of any in this situation. what should you tell him? mr. polanski likes the cost of an hmo plan available in his area, but would like to be able to visit one or two doctors who aren't participating providers. he wants to know if the point of service (pos) option available with some hmos will be of any in this situation. what should you tell him?
Answers: 1
Advanced Placement (AP), 23.06.2019 14:00
How can firms use marginal analysis to determine the price of a product? a) profit maximization can occur when the marginal cost exceeds the marginal revenue. b) the total cost of production can determine the individual unit price of a product. c) marginal analysis can be used to determine at what price profit maximization occurs. d) firms can calculate the marginal cost of a product and set the price lower than the cost.
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Advanced Placement (AP), 25.06.2019 22:00
When your organs don't receive enough blood, they begin to a. shut down b. speed up c. inflame d. dry out
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Advanced Placement (AP), 26.06.2019 13:30
Which of the following statements is true of how pollutants can enter the environment from a sanitary landfill?
Answers: 1
A researcher has conducted a survey using a simple random sample of 225 elementary teachers to creat...
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