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 1 (27.47 KiB) Viewed 55 times

In a survey of 1006 adults, a polling agency asked, "When you retire do you think you will have enough money to live comfortably or not. Of the 1006 surveyed, 528 stated that they were worried about having enough money to live comfortably in retirement. Construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Click here to view the table of critical t-values. Click here to view the table of critical values of the chi-square distribution. and Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to three decimal places as needed.) A. There is 90% confidence that the true proportion of worried adults is between B. There is a 90% probability that the true proportion of worried adults is between OC. 90% of the population lies in the interval between and and

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.