An economist reports that 390 out of a sample of 1,200 middle-income American households actively participate in the stock market. a. Construct the 90% confidence interval for the proportion of middle-income Americans who actively participate in the stock market. Note: Round final answers to 3 decimal places. Confidence interval to b. Can we conclude that the percentage of middle-income Americans who actively participate in the stock market is not 35%? ◇ Yes, since the confidence interval contains the value 0.35. ◇ Yes, since the confidence interval does not contain the value 0.35. O No, since the confidence interval contains the value 0.35. No, since the confidence interval does not contain the value 0.35.
An economist reports that 390 out of a sample of 1,200 middle-income American households actively participate in the stock market. a. Construct the 90% confidence interval for the proportion of middle-income Americans who actively participate in the stock market. Note: Round final answers to 3 decimal places. Confidence interval to b. Can we conclude that the percentage of middle-income Americans who actively participate in the stock market is not 35%? ◇ Yes, since the confidence interval contains the value 0.35. ◇ Yes, since the confidence interval does not contain the value 0.35. O No, since the confidence interval contains the value 0.35. No, since the confidence interval does not contain the value 0.35.
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 1SE: What term is used to express the likelihood of an event occurring? Are there restrictions on its...
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