Questions from Applied Statistics

Q: Use Excel to generate 100 random integers from (a) 1

Use Excel to generate 100 random integers from (a) 1 through 2, inclusive; (b) 1 through 5, inclusive; and (c) 0 through 99, inclusive. (d) In each case, write the Excel formula. (e) In each case, cal...

Q: Calculate each compound event probability: a. P(

Calculate each compound event probability: a. P(X < 10), λ = 11.0 b. P(X > 3), λ = 5.2 c. P(X < 2), λ = 3.7

Q: “Many college graduates will not use very much statistics during their

“Many college graduates will not use very much statistics during their 40-year careers, so why study it?” (a) List several arguments for and against this statement. Which position do you find more con...

Q: How can you tell when the point has been reached where you

How can you tell when the point has been reached where you should call for an expert statistician? List some costs and some benefits that would govern this decision.

Q: Which type of data (cross-sectional or time series)

Which type of data (cross-sectional or time series) is each variable? a. Value of Standard & Poor’s 500 stock price index at the close of each trading day last year. b. Closing price of each of the 5...

Q: Which type of data (cross-sectional or time series)

Which type of data (cross-sectional or time series) is each variable? a. Mexico’s GDP for each of the last 10 quarters. b. Unemployment rates in each of the 31 states in Mexico at the end of last yea...

Q: Recently, the same five winning numbers (4, 21,

Recently, the same five winning numbers (4, 21, 23, 34, 39) came up both on Monday and on Wednesday in the North Carolina Lottery. “That’s so unlikely that it must be rigged,” said Mary. Which fallacy...

Q: The probability that a randomly selected student in your class is celebrating

The probability that a randomly selected student in your class is celebrating a birthday today is 1/365.

Q: More than 30 percent of the results from major search engines for

More than 30 percent of the results from major search engines for the keyword phrase “ring tone” are fake pages created by spammers.

Q: (a) Use Excel to prepare a line chart to display

(a) Use Excel to prepare a line chart to display the data on housing starts. Modify the default colors, fonts, etc., to make the display effective. (b) Describe the pattern, if any.