Ohio University Statistics Quiz Questions

I’m studying for my Statistics class and don’t understand how to answer this. Can you help me study?

Instructions

Instructions	If the question requires computation, do the calculations and then give or select the correct values using the following rule: Keep at least 4 decimal places at intermediate steps of a calculation, and round your final answer to 2 decimal places, unless otherwise noted. For example: 16.6667 would become 16.67 after rounding (In the course notes for Module 7, probabilities such .678934 are instead rounded to four decimal places, so the correct way to report the aforementioned probability is .6789)
Multiple Attempts	This test allows 2 attempts. This is attempt number 1.
Force Completion	This test can be saved and resumed later.
	Your answers are saved automatically.

1

Questions 1-4 are based on the following information:

You and your friends have decided to go to The Kentucky Derby. There are 12 horses in the race. How many ways can the horses come in first, second, or third?

This an example of a __________ problem?

		factorial
		combination
		permutation
		CPI

Question 2

Questions 1-4 are based on the following information:

You and your friends have decided to go to The Kentucky Derby. There are 12 horses in the race. How many ways can the horses come in first, second, or third?

What is the numeric value of N?

		3
		12
		1320
		none of the above

Question 3

Questions 1-4 are based on the following information:

You and your friends have decided to go to The Kentucky Derby. There are 12 horses in the race. How many ways can the horses come in first, second, or third?

What is the numeric value of r?

		3
		12
		1320
		none of the above

Question 4

Questions 1-4 are based on the following information:

You and your friends have decided to go to The Kentucky Derby. There are 12 horses in the race. How many ways can the horses come in first, second, or third?

What is the calculated value (solution) for this example?

		3
		12
		1320
		none of the above

Question 5

A security system uses a 2-letter password, but no letter can be used more than once. How many possible passwords are there if 5 of the letters of the alphabet can be used by the system? (Use these numbers for this question only!)

For this question indicate only what the value of N is?

Question 6

A security system uses a 8-letter password, but no letter can be used more than once. How many possible passwords are there if 23 of the letters of the alphabet can be used by the system? (Use these numbers for this question only!)

For this question indicate only what the value of r is?

Question 7

A security system uses a four-letter password, but no letter can be used more than once. How many possible passwords are there if 26 of the letters of the alphabet can be used by the system? (Use these numbers for this question only!

Question 8

How many ways are there to select a subcommittee of 7 members from among a committee of 38? (Use these numbers for this question only!)

Question 9

You have 12 friends with whom you like to play golf. However, the golf cart only seats 4 people. Since you will take up one seat, you can only play with 3 friends at one time. How many different groups of golfers can you have?

This an example of

		Combination
		Permutation
		Inverted statistical combination
		Inverted statistical permutation

Question 10

You have 71 friends with whom you like to play golf. However, the golf cart only seats 4 people. Since you will take up one seat, you can only play with 3 friends at one time. How many different groups of golfers can you have? (Use these numbers for this question only!)

What is the value of N in this example?

Question 11

You and your friends have decided to go to the horse races. There are 10 horses in the first race. How many different ways can the horses come in first, second, and third?

Question 12

6! Is equal to what number?

		30
		120
		360
		720

Question 13

Which of the following statements is a true statement?

		With a combination, order matters.
		r represents the total possible number of objects being counted.
		With a permutation, order matters.
		With a permutation, order does not matter.
		With both permutation and combination, order does not matter.

Question 14

Which statement below is false regarding the CPI?

		The CPI is the most common measure of change in the cost of living in the United States.
		The CPI is based on a variable market basket price index.
		The CPI is a common measure of inflation.
		The CPI measures the cost of a market basket of goods and services that represent the typical purchases of urban households.

Question 15

Using 1995 as the base period, the price index for cars is now 140. What does this index number mean?

		The price of cars has decreased 40% since 1995.
		The price of cars has increased 40% since 1995.
		The price of cars has increased 140% since 1995.
		The current price of cars is within $140 of the 1995 price.

Question 16

A _________ economic indicator is one whose changes precede changes in the economy.

		Leading
		Coincidence
		Lagging
		Vangard

Question 17

One criticism of the CPI is that the market basket used in the CPI may not reflect current spending priorities. Which of the following is an example of this?

		Personal computers were less powerful in 1982-1984.
		Cell phones are more commonly purchased today than in 1993-1995.
		Using extreme couponing methods, a family can save hundreds of dollars a month.
		Goods cost more in Alaska and Hawaii due to transportation costs.

Question 18

The CPI’s at the start of each decade from 1950 to 2005 were:

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What was the rate of inflation for the 1960s, as measured by the percentage change in the CPI?

		9.2%
		22.8%
		23.7%
		31.1%

Question 19

The CPI’s at the start of each decade from 1950 to 2005 were:

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What was the rate of inflation for the 1980s, as measured by the percentage change in the CPI?

		37.0%
		48.3%
		58.6%
		112.4%

Question 20

Which of the following is not one of the 8 major categories of the CPI, as of 1998?

		Apparel
		Dairy and related products
		Medical care
		Recreation

Question 21

If rent for a particular apartment was $477/month in 1980 (CPI = 82.4), what would be the comparable rent in 1990 (CPI 130.7)? Round your answer to the nearest cent (i.e. two decimal places). Only enter the number, not the dollar sign ($).

Question 22

What was the original base year for the CPI?

		1899
		1913
		1982
		1989

Question 23

The Consumer Price Index

		Is representative of the typical family budget in the Midwest.
		Was originally developed to determine salary adjustments.
		Is updated every three years to reflect inflation.
		Was last updated in 1981.