# Question

You have four stocks in your portfolio. Three of the stocks decreased in value this month, while the value of one increased:

a. List the four possible samples of size 3 that could be selected from this population of stocks.

b. For each of the four samples, determine the proportion of stocks that decreased in value.

c. Produce a table showing the sampling distribution of the sample proportion and show the corresponding bar chart.

a. List the four possible samples of size 3 that could be selected from this population of stocks.

b. For each of the four samples, determine the proportion of stocks that decreased in value.

c. Produce a table showing the sampling distribution of the sample proportion and show the corresponding bar chart.

## Answer to relevant Questions

Refer to Exercise 2. a. Show the bar chart for the sampling distribution and comment on its shape. b. Show that the mean of the sampling distribution is exactly equal to the population proportion, c. Compute the standard ...A random sample from a large population produces a sample proportion of .65. Sample size is 100. Build and interpret the 90% confidence interval estimate of the population proportion. The Internal Revenue Service (IRS) is conducting a study to determine the percentage of taxpayers who overpaid their taxes last year. In a sample of 2500 taxpayer returns, the IRS found that 780 taxpayers had overpaid. a. ...Hi Shear Corporation of Torrance California has very specific procedures for testing the quality of its product, Hi Set metal fasteners. One of the product characteristics that is monitored is surface texture. Company ...Numerous surveys have documented excessive drinking among college students. Suppose a random sample of 10 freshman students and a random sample of 15 senior students at Boylston University are selected to participate in a ...Post your question

0