The assets (in billions of dollars) of the four wealthiest people in a particular country are 41, 25, 22. 10. Assume tha

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The Assets In Billions Of Dollars Of The Four Wealthiest People In A Particular Country Are 41 25 22 10 Assume Tha 1 (93.66 KiB) Viewed 28 times

The Assets In Billions Of Dollars Of The Four Wealthiest People In A Particular Country Are 41 25 22 10 Assume Tha 2 (85.58 KiB) Viewed 28 times

The assets (in billions of dollars) of the four wealthiest people in a particular country are 41, 25, 22. 10. Assume that samples of size n=2 are randomly selected with replacement from this population of four values. a. After identifying the 16 different possible samples and finding the mean of each sample, construct a table representing the sampling distribution of the sample mean. In the table, values of the sample mean that are the same have been combined. Probability x Probability 41 23.5 33 22 31.5 17.5 25.5 16 25 10 (Type integers or fractions.) b. Compare the mean of the population to the mean of the sampling distribution of the sample mean. The mean of the population, is the mean of the sample means, (Round to two decimal places as needed.) c. Do the sample means target the value of the population mean? In general, do sample means make good estimates of population means? Why or why not? The sample means the population mean. In general, sample means make good estimates of population means because the mean is V estimator.

Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 1025 and x = 538 who said "yes." Use a 95% confidence level. Click the icon to view a table of z scores. DOD a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) b) Identify the value of the margin of error E. (Round to three decimal places as needed.) c) Construct the confidence interval. <p< (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. One has 95% confidence that the sample proportion is equal to the population proportion. OB. 95% of sample proportions will fall between the lower tfound and the upper bound. O C. There is a 95% chance that the true value of the population proportion will fall between the lower bound and the upper bound. OD. One has 95% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.

Listed below are 15 commute times in minutes for workers of age 16 and older in Los Angeles. Complete parts (a) and (b) below. 30 30 25 20 10 60 20 5 30 30 10 15 60 50 40 BE! Click the icon to view the table of bootstrap sample means. COB a. Using the bootstrap method with the provided 200 bootstrap samples, construct a 99% confidence interval estimate of the population mean The bootstrap interval is 15.75 minutes <p < 42.25 minutes. (Type integers or decimals rounded to two decimal places as needed.) b. Given that the same data were used previously for a 99% confidence interval, 15.75 minutes < < 42.25 minutes, based on use of the t distribution, and given that the data do not appear to be from a normally distributed population, which confidence interval is likely to be better. The confidence interval from part (a) or the confidence interval based on use of the t distribution? O A. The confidence interval from part (a) is likely to be better. The sample data do not appear to be from a normally distributed population, which violates the requirements for using the t distribution. O B. The confidence interval from part (a) is likely to be better. While the requirements for using the t distribution and the bootstrap method are both met, the bootstrap method produces more accurate intervals from the same sample data. OC. The confidence interval based on use of the t distribution is likely to be better. The distribution of the sample statistics is not approximately symmetric, which violates the requirements for the bootstrap method. OD. The confidence interval based on use of the t distribution is likely to be better. While the requirements for using thet distribution and the bootstrap method are both met, the t distribution produces more accurate intervals from the same sample data.