Question 1

Find the probability of the event.
-If two 6-sided dice are rolled, what is the probability that the sum is greater than 9?

Accepted Answer

A)  121 
B)  16 
C)  6 
D)  14 
A)  121 
B)  16 
C)  6 
D)  14

Question 2

Solve the problem.
-A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 460 seconds and a
Standard deviation of 50 seconds. Find the probability that a randomly selected boy in secondary school can run
The mile in less than 345 seconds.

Accepted Answer

A)  0.9893 
B)  0.4893 
C)  0.0107 
D)  0.5107 
A)  0.9893 
B)  0.4893 
C)  0.0107 
D)  0.5107

Question 3

Describe the shape of the distribution.
-A histogram for the sale prices of homes sold in one city during last year is shown below.

Accepted Answer

A)  Left skewed, unimodal 
B)  Right skewed, unimodal 
C)  Bimodal 
D)  Symmetric, unimodal 
A)  Left skewed, unimodal 
B)  Right skewed, unimodal 
C)  Bimodal 
D)  Symmetric, unimodal

Question 4

Find the probability of the event.
-If two 12-sided dice are rolled, what is the probability that both numbers are even?

Accepted Answer

A)  14473 
B)  14 
C)  12 
D)  14471 
A)  14473 
B)  14 
C)  12 
D)  14471

Question 5

Identify the following as an experiment or an observational study.
-A researcher reports that a high correlation has been found between gender and political party affiliation.

Accepted Answer

Incorrect. There may be associ

Question 6

Solve the problem.
-A box contains 4 slips of paper, on each of which is written the number 1, 2, 3, or 4, respectively. A slip is drawn and the number on it is noted. That slip is put aside, another drawn, and the number on it noted. What is the probability that
a. the sum of the two numbers is 5?
b. the first number drawn is a 2 and the second number is not 5?
c. the sum of the two numbers is not 10?

Accepted Answer

A)  a) 13 b) 14 c) 0 
B)  a) 13 b) 14 c) 1 
C)  a) 14 b) 13 c) 1 
D)  a) 14 b) 13 c) 0 
A)  a) 13 b) 14 c) 0 
B)  a) 13 b) 14 c) 1 
C)  a) 14 b) 13 c) 1 
D)  a) 14 b) 13 c) 0

Question 7

Solve the problem.
-The table shows the total amount of precipitation (in inches) in a certain US city in 17 different years. Find the interquartile range.

Accepted Answer

A)  7.9 in. 
B)  6.7 in. 
C)  7.2 in. 
D)  7.4 in. 
A)  7.9 in. 
B)  6.7 in. 
C)  7.2 in. 
D)  7.4 in.

Question 8

Find the mean for the given sample data.
-The local Tupperware dealers earned these commissions last month:
 
What was the mean commission earned? Round your answer to the nearest cent.

Accepted Answer

A)  $2703.92 
B)  $2157.14 
C)  $2403.48 
D)  $2163.14 
A)  $2703.92 
B)  $2157.14 
C)  $2403.48 
D)  $2163.14

Question 9

Find the median for the given sample data.
-A new business had the following monthly net gains: 
 
Find the median net gain.

Accepted Answer

A)  $5968.00 
B)  $5065.50 
C)  $5981.00 
D)  $5628.33 
A)  $5968.00 
B)  $5065.50 
C)  $5981.00 
D)  $5628.33

Question 10

Identify whether the number described is a parameter or a statistic.
-In a random sample of 250 single mothers, 30% reported high levels of stress.

Accepted Answer

A)  Parameter 
B)  Statistic 
A)  Parameter 
B)  Statistic

Question 11

Identify the following as an experiment or an observational study.
-At one hospital in 2005, 674 women were diagnosed with breast cancer. Five years later, 88% of the Caucasian women and 83% of the African American women were still alive.

Accepted Answer

A)  Observational study 
B)  Experiment 
A)  Observational study 
B)  Experiment

Question 12

Find the probability.
-A 5-card hand is dealt from a deck of 52 cards. What is the probability that 
a) all are from the same suit?
b) all are hearts?
c) exactly 2 are spades?

Accepted Answer

A)  a) 0.000495 b) 0.00198 c) 0.003516 
B)  a) 0.00198 b) 0.000495 c) 0.003516 
C)  a) 0.000495 b) 0.00198 c) 0.00003 
D)  a) 0.00198 b) 0.000495 c) 0.27428 
A)  a) 0.000495 b) 0.00198 c) 0.003516 
B)  a) 0.00198 b) 0.000495 c) 0.003516 
C)  a) 0.000495 b) 0.00198 c) 0.00003 
D)  a) 0.00198 b) 0.000495 c) 0.27428

Question 13

Solve the problem.
-On a multiple choice test with 20 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the standard deviation for the number of correct answers.

Accepted Answer

A)  37.5 
B)  3.8 
C)  1.9 
D)  14.1 
A)  37.5 
B)  3.8 
C)  1.9 
D)  14.1

Question 14

Find the probability.
-The maker of a certain candy claims that the proportions of colors of candy produced are: 0.2 red, 0.1 blue, 0.2 green, 0.1 purple and 0.4 yellow. What is the probability that a randomly selected candy from a
Newly-opened bag will be neither red nor green?

Accepted Answer

A)  0.6 
B)  1 
C)  0.4 
D)  0.2 
A)  0.6 
B)  1 
C)  0.4 
D)  0.2

Question 15

Find the normal probability using a grapher.
-P(1.5 < z < 2.5)

Accepted Answer

A)  0.982 
B)  0.994 
C)  0.061 
D)  0.933 
A)  0.982 
B)  0.994 
C)  0.061 
D)  0.933

Question 16

Identify whether the average described is a mean, median, or mode.
-The average European speaks more than one language.

Accepted Answer

A)  Mode 
B)  Median 
C)  Mean 
A)  Mode 
B)  Median 
C)  Mean

Question 17

Find the mean. Round to the nearest tenth.
-

Accepted Answer

A)  26.9 
B)  24.3 
C)  6.3 
D)  29.2 
A)  26.9 
B)  24.3 
C)  6.3 
D)  29.2

Question 18

Find the weighted average.
-A student earned grades of 87, 81, 72, and 92 on her four regular tests. She earned a grade of 79 on the final exam and 85 on her class projects. Her combined homework grade was 88. The four regular tests count for 40%
Of the final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%.
What is her weighted mean grade? Round to one decimal place.

Accepted Answer

A)  83.0 
B)  83.4 
C)  82.5 
D)  83.9 
A)  83.0 
B)  83.4 
C)  82.5 
D)  83.9

Question 19

Solve the problem.
-A and B are events in a sample space S such that P(A) = 0.54, P(B) = 0.44, and P(A and B) = 0.14. Draw a Venn diagram showing the overlapping sets A and B and fill in the probabilities of the four regions formed.

Accepted Answer

A)  x = 0.4, y = 0.14, z = 0.3, w = 0.16 
B)  x = 0.4, y = 0.14, z = 0.3, w = 0.02 
C)  x = 0.54, y = 0.14, z = 0.44, w = 0.12 
D)  x = 0.54, y = 0, z = 0.44, w = 0.02 
A)  x = 0.4, y = 0.14, z = 0.3, w = 0.16 
B)  x = 0.4, y = 0.14, z = 0.3, w = 0.02 
C)  x = 0.54, y = 0.14, z = 0.44, w = 0.12 
D)  x = 0.54, y = 0, z = 0.44, w = 0.02

Question 20

Find the mean. Round to the nearest tenth.
-

Accepted Answer

A)  304.5 
B)  82.7 
C)  263.9 
D)  288.7 
A)  304.5 
B)  82.7 
C)  263.9 
D)  288.7

Find the probability of the event. -If two 6-sided dice are rolled, what is the probability that the sum is greater than 9?

Describe the shape of the distribution. -A histogram for the sale prices of homes sold in one city during last year is shown below.

Find the probability of the event. -If two 12-sided dice are rolled, what is the probability that both numbers are even?

Identify the following as an experiment or an observational study. -A researcher reports that a high correlation has been found between gender and political party affiliation.

Solve the problem. -The table shows the total amount of precipitation (in inches) in a certain US city in 17 different years. Find the interquartile range.

Find the mean for the given sample data. -The local Tupperware dealers earned these commissions last month: What was the mean commission earned? Round your answer to the nearest cent.

Find the median for the given sample data. -A new business had the following monthly net gains: Find the median net gain.

Identify whether the number described is a parameter or a statistic. -In a random sample of 250 single mothers, 30% reported high levels of stress.

Identify the following as an experiment or an observational study. -At one hospital in 2005, 674 women were diagnosed with breast cancer. Five years later, 88% of the Caucasian women and 83% of the African American women were still alive.

Find the probability. -A 5-card hand is dealt from a deck of 52 cards. What is the probability that a) all are from the same suit? b) all are hearts? c) exactly 2 are spades?

Solve the problem. -On a multiple choice test with 20 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the standard deviation for the number of correct answers.

Find the probability. -The maker of a certain candy claims that the proportions of colors of candy produced are: 0.2 red, 0.1 blue, 0.2 green, 0.1 purple and 0.4 yellow. What is the probability that a randomly selected candy from a Newly-opened bag will be neither red nor green?

Find the normal probability using a grapher. -P(1.5 < z < 2.5)

Identify whether the average described is a mean, median, or mode. -The average European speaks more than one language.

Find the mean. Round to the nearest tenth. -

Solve the problem. -A and B are events in a sample space S such that P(A) = 0.54, P(B) = 0.44, and P(A and B) = 0.14. Draw a Venn diagram showing the overlapping sets A and B and fill in the probabilities of the four regions formed.

Find the mean. Round to the nearest tenth. -

Functions and Graphs

Polynomial, Power, and Rational Functions

Exponential, Logistic, and Logarithmic Functions

Trigonometric Functions

Analytic Trigonometry

Applications of Trigonometry

Systems and Matrices

Analytic Geometry in Two and Three Dimensions

Discrete Mathematics

An Introduction to Calculus: Limits, Derivatives, and Integrals

Prerequisites

Filters

Exam 10: Statistics and Probability

Find the probability of the event. -If two 6-sided dice are rolled, what is the probability that the sum is greater than 9?

Describe the shape of the distribution. -A histogram for the sale prices of homes sold in one city during last year is shown below.

Find the probability of the event. -If two 12-sided dice are rolled, what is the probability that both numbers are even?

Identify the following as an experiment or an observational study. -A researcher reports that a high correlation has been found between gender and political party affiliation.

Solve the problem. -The table shows the total amount of precipitation (in inches) in a certain US city in 17 different years. Find the interquartile range.

Find the mean for the given sample data. -The local Tupperware dealers earned these commissions last month: What was the mean commission earned? Round your answer to the nearest cent.

Find the median for the given sample data. -A new business had the following monthly net gains: Find the median net gain.

Identify whether the number described is a parameter or a statistic. -In a random sample of 250 single mothers, 30% reported high levels of stress.

Identify the following as an experiment or an observational study. -At one hospital in 2005, 674 women were diagnosed with breast cancer. Five years later, 88% of the Caucasian women and 83% of the African American women were still alive.

Find the probability. -A 5-card hand is dealt from a deck of 52 cards. What is the probability that a) all are from the same suit? b) all are hearts? c) exactly 2 are spades?

Solve the problem. -On a multiple choice test with 20 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the standard deviation for the number of correct answers.

Find the probability. -The maker of a certain candy claims that the proportions of colors of candy produced are: 0.2 red, 0.1 blue, 0.2 green, 0.1 purple and 0.4 yellow. What is the probability that a randomly selected candy from a Newly-opened bag will be neither red nor green?

Find the normal probability using a grapher. -P(1.5 < z < 2.5)

Identify whether the average described is a mean, median, or mode. -The average European speaks more than one language.

Find the mean. Round to the nearest tenth. -

Solve the problem. -A and B are events in a sample space S such that P(A) = 0.54, P(B) = 0.44, and P(A and B) = 0.14. Draw a Venn diagram showing the overlapping sets A and B and fill in the probabilities of the four regions formed.

Find the mean. Round to the nearest tenth. -

Functions and Graphs

Polynomial, Power, and Rational Functions

Exponential, Logistic, and Logarithmic Functions

Trigonometric Functions

Analytic Trigonometry

Applications of Trigonometry

Systems and Matrices

Analytic Geometry in Two and Three Dimensions

Discrete Mathematics

An Introduction to Calculus: Limits, Derivatives, and Integrals

Prerequisites

Filters