In a survey of 1006 adults, a polling agency asked, "When you retire do you think you will have enough money to live com
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In a survey of 1006 adults, a polling agency asked, "When you retire do you think you will have enough money to live com
In a survey of 2055 adults in a certain country conducted during a period of economic uncertainty, 61% thought that wages paid to workers in industry were too low. The margin of error was 3 percentage points with 95% confidence. For parts (a) through (d) below, which represent a reasonable interpretation of the survey results? For those that are not reasonable, explain the flaw. (a) We are 95% confident 61% of adults in the country during the period of economic uncertainty felt wages paid to workers in industry were too low. Is the interpretation reasonable? O A. The interpretation is reasonable OB. The interpretation is flawed. The interpretation provides no interval about the population proportion. O C. The interpretation i flawed. The interpretation suggests that this interval sets the standard for all the other intervals, which is not true. OD. The interpretation is flawed. The interpretation indicates that the level of confidence is varying. (b) We are 92% to 98% confident 61% of adults in the country during the period of economic uncertainty felt wages paid to workers in industry were too low. Is the interpretation reasonable? O A. The interpretation reasonable OB. The interpretation is flawed. The interpretation suggests that this interval sets the standard for all the other intervals, which is not true. OC. The interpretation is flawed. The interpretation provides no interval about the population proportion. OD. The interpretation flawed. The interpretation indicates that the level of confidence is varying.
(c) We are 95% confident that the interval from 0.58 to 0.64 contains the true proportion of adults in the country during the period of economic uncertainty who believed wages paid to workers in industry were too low. Is the interpretation reasonable? O A. The interpretation is reasonable. OB. The interpretation is flawed. The interpretation provides no interval about the population proportion O C. The interpretation is flawed. The interpretation indicates that the level of confidence is varying. OD. The interpretation is flawed. The interpretation suggests that this interval sets the standard for all the other intervals, which is not true. (d) In 95% of samples of adults in the country during the period of economic uncertainty, the proportion who believed wages paid to workers in industry were too low is between 0.58 and 0.64. Is the interpretation reasonable? O A. The interpretation is reasonable. OB. The interpretation is flawed. The interpretation provides no interval about the population proportion OC. The interpretation is flawed. The interpretation indicates that the level of confidence is varying. OD. The interpretation is flawed. The interpretation suggests that this interval sets the standard for all the other intervals, which is not true.