Comm 214 - Chapters 4,6,7 questions well
answered to pass
1. A is a measure of the chance that an
uncertain event will occur.
2. At a college, 70 percent of the students are
P(C#Male) = .05.30 =
women, and 50 percent of the students
.1667
receive a grade of C. 25 percent of the
students are neither female nor C students.
Use this contingency table.
3. During the past six months, 73.2 percent of U.S. house- P (x>10) =
holds purchased sugar. Assume that thesep(z>10−8.221.10=p(z>1.62
expendi- tures are approximately normally 1.000 - .9472 = .0528
distributed with a mean of $8.22 and a
standard deviation of $1.10.
Find the probability that a household spent more
than
$10.00 on sugar. the number of minutes re-
quired to run 1 mile
4. Which of the following is not a discrete
random vari- able? Yes, mutually exclusive.
5. Consider a standard deck of 52 playing cards, a this case, you cannot
ran- domly selected card from the deck, and have both a diamond
the following events: R = red, B = black, A = and a club at the same
ace, N = nine, D = diamond, and C = club. time.
Are D and C mutually exclusive?
6. Joe is considering pursuing an MBA degree. He has ap- (.75)(.60)
0.45
,Comm 214 - Chapters 4,6,7 questions well
answered to pass
plied to two different universities. The acceptance
rate for applicants with similar qualifications
is 25 percent for University A and 40 percent
for University B.
, Comm 214 - Chapters 4,6,7 questions well
answered to pass
What is the probability that Joe will not be
accepted at either university?
7. Employees of a local university have been No, gender and job
classified according to gender and job type. type are not mutually
exclu- sive.
Are gender and type of job mutually
exclusive?
P(M)=200/300=.
667
P(FA)=120/300=0
.40
P(M)FA)=110/3
00`0
8. An aptitude test has a mean score of 80 and a standard X = μ + zσ =
80 + (.52)(5) =
deviation of 5. The population of scores is normally ounces?
distributed.
10. A(n)
What raw score corresponds to the 70th
percentile? is the set
of all of
9. An apple juice producer buys all his apples the distinct
from a conglomerate of apple growers in one possible
northwestern state. The amount of juice outcomes
obtained from each of these apples is of an
approximately normally distributed with a experimen
mean of 2.25 ounces and a standard deviation t.
of .15 ounce.
11. A
What is the probability that a randomly selected manufacture
apple will contain between 2.00 and 2.50
answered to pass
1. A is a measure of the chance that an
uncertain event will occur.
2. At a college, 70 percent of the students are
P(C#Male) = .05.30 =
women, and 50 percent of the students
.1667
receive a grade of C. 25 percent of the
students are neither female nor C students.
Use this contingency table.
3. During the past six months, 73.2 percent of U.S. house- P (x>10) =
holds purchased sugar. Assume that thesep(z>10−8.221.10=p(z>1.62
expendi- tures are approximately normally 1.000 - .9472 = .0528
distributed with a mean of $8.22 and a
standard deviation of $1.10.
Find the probability that a household spent more
than
$10.00 on sugar. the number of minutes re-
quired to run 1 mile
4. Which of the following is not a discrete
random vari- able? Yes, mutually exclusive.
5. Consider a standard deck of 52 playing cards, a this case, you cannot
ran- domly selected card from the deck, and have both a diamond
the following events: R = red, B = black, A = and a club at the same
ace, N = nine, D = diamond, and C = club. time.
Are D and C mutually exclusive?
6. Joe is considering pursuing an MBA degree. He has ap- (.75)(.60)
0.45
,Comm 214 - Chapters 4,6,7 questions well
answered to pass
plied to two different universities. The acceptance
rate for applicants with similar qualifications
is 25 percent for University A and 40 percent
for University B.
, Comm 214 - Chapters 4,6,7 questions well
answered to pass
What is the probability that Joe will not be
accepted at either university?
7. Employees of a local university have been No, gender and job
classified according to gender and job type. type are not mutually
exclu- sive.
Are gender and type of job mutually
exclusive?
P(M)=200/300=.
667
P(FA)=120/300=0
.40
P(M)FA)=110/3
00`0
8. An aptitude test has a mean score of 80 and a standard X = μ + zσ =
80 + (.52)(5) =
deviation of 5. The population of scores is normally ounces?
distributed.
10. A(n)
What raw score corresponds to the 70th
percentile? is the set
of all of
9. An apple juice producer buys all his apples the distinct
from a conglomerate of apple growers in one possible
northwestern state. The amount of juice outcomes
obtained from each of these apples is of an
approximately normally distributed with a experimen
mean of 2.25 ounces and a standard deviation t.
of .15 ounce.
11. A
What is the probability that a randomly selected manufacture
apple will contain between 2.00 and 2.50
