Choice are 1) -less than - equal to - greater than 2) -target - do not target 3)

Question

Choice are

1) -less than

- equal to

- greater than

2) -target

- do not target

3) - do

- do not

4) - a biased

- an unbiased

The assets (in billions of dollars) of the four wealthiest people in a particular country are 45, 33, 19, 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 26 21.5 19 14.5 10 45 39 32 27.5 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 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 L- | the mean of the sample means, the population mean. In general, sample means make good estimates of population means because the mean s estimator

Explanation / Answer

as there are 16 samples therefore each sample has equal probability =1/16

b) the mean of the population 26.75 is   equal to the mean of the sample means 26.75

c) sample means target the population..........means do make good.............mean is an unbiased estimator

xbar probability xbar probability 45 1/16 26 1/8 39 1/8 21.5 1/8 33 1/16 19 1/16 32 1/8 14.5 1/8 27.5 1/8 10 1/16

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