Question

question 1

A CBS News poll conducted June 10 and 11, 2006, among a
nationwide random sample of 651 adults, asked those adults about
their party affiliation (Democrat, Republican or none) and their
opinion of how the US economy was changing ("getting better,"
"getting worse" or "about the same"). The results are shown in the
table below.

better | same | worse | |

Republican | 38 | 104 | 44 |

Democrat | 12 | 87 | 137 |

none | 21 | 90 | 118 |

Express your answers as a decimal and round to four decimal
places.

If we randomly select one of the adults who participated in this
study, compute:

a. P(Republican) =

b. P(worse) =

c. P(worse|Republican) =

d. P(Republican|worse) =

3. P(Republican and worse) =

Question 2.

Private nonprofit four-year colleges charge, on average, $27,752
per year in tuition and fees. The standard deviation is $7,329.
Assume the distribution is normal. Let X be the cost for a randomly
selected college. Round all answers to 4 decimal places where
possible.

a. What is the distribution of X? X ~ N(,)

b. Find the probability that a randomly selected Private nonprofit
four-year college will cost less than 28,853 per year.

c. Find the 78th percentile for this distribution. $ (Round to the
nearest dollar.)

Answer #1

A CBS News poll conducted June 10 and 11, 2006, among a
nationwide random sample of 651 adults, asked those adults about
their party affiliation (Democrat, Republican or none) and their
opinion of how the US economy was changing ("getting better,"
"getting worse" or "about the same"). The results are shown in the
table below.
Better
Same
Worse
Republican
38
104
44
Democrat
12
87
137
None
21
90
118
If we randomly select one of the adults who participated...

A CBS News poll conducted June 10 and 11, 2006, among a
nationwide random sample of 651 adults, asked those adults about
their party affiliation (Democrat, Republican or none) and their
opinion of how the US economy was changing ("getting better,"
"getting worse" or "about the same"). The results are shown in the
table below.
better
same
worse
Republican
38
104
44
Democrat
12
87
137
none
21
90
118
Express each of your first five answers as a decimal...

A CBS News poll involved a nationwide random sample of 651
adults, asked those adults about their party affiliation (Democrat,
Republican or none) and their opinion of how the US economy was
changing ("getting better," "getting worse" or "about the same").
The results are shown in the table below. better same worse
Republican 38 104 44 Democrat 12 87 137 none 21 90 118 If we
randomly select one of the adults who participated in this study,
compute: (round to...

11.) Giving a test to a group of students, the grades and gender
are summarized below. Round your answers to 4 decimal places.
Grades and Gender
A
B
C
Total
Male
18
6
5
29
Female
9
14
2
25
Total
27
20
7
54
If one student is chosen at random,
a. Find the probability that the student got a C:
b. Find the probability that the student was male AND got a
"B":
c. Find the probability that...

Private nonprofit four-year colleges charge, on average, $27,629
per year in tuition and fees. The standard deviation is $6,833.
Assume the distribution is normal. Let X be the cost for a randomly
selected college. Round all answers to 4 decimal places where
possible.
a. What is the distribution of X? X ~ N( ____ , ____ )
b. Find the probability that a randomly selected Private nonprofit
four-year college will cost less than 31,217 per year. ______.
round to 4...

Private nonprofit four-year colleges charge, on average, $26,516
per year in tuition and fees. The standard deviation is $7,429.
Assume the distribution is normal. Let X be the cost for a randomly
selected college. Round all answers to 4 decimal places where
possible.
a. What is the distribution of X? X ~ N(,)
b. Find the probability that a randomly selected Private nonprofit
four-year college will cost less than 22,272 per year.
c. Find the 62nd percentile for this distribution....

Private nonprofit four-year colleges charge, on average, $26,013
per year in tuition and fees. The standard deviation is $6,728.
Assume the distribution is normal. Let X be the cost for a randomly
selected college. Round all answers to 4 decimal places where
possible.
a. What is the distribution of X? X ~ N(___,___)
b. Find the probability that a randomly selected Private
nonprofit four-year college will cost less than 28,730 per
year.
c. Find the 63rd percentile for this distribution....

Private nonprofit four-year colleges charge, on average, $26,582
per year in tuition and fees. The standard deviation is $6,549.
Assume the distribution is normal. Let X be the cost for a randomly
selected college. Round all answers to 4 decimal places where
possible.
a. What is the distribution of X? X ~ N(Correct,Correct)
b. Find the probability that a randomly selected Private nonprofit
four-year college will cost less than 27,140 per year.
Incorrect
c. Find the 66th percentile for this...

Based on a poll, among adults who regret getting tattoos, 11%
say that they were too young when they got their tattoos. Assume
that four adults who regret getting tattoos are randomly selected,
and find the indicated probability. Complete parts (a) through
(d) below. a. Find the probability that none of the selected adults
say that they were too young to get tattoos. nothing (Round to
four decimal places as needed.) b. Find the probability that
exactly one of the...

1. A random number generator is used to select a number from 1
to
500 ?(inclusively).
What is the probability of selecting the number 595
?
What is the probability?
2.Identify the sample space of the probability experiment and
determine the number of outcomes in the sample space.
-Randomly choosing an even number between 10 and 20,
inclusive
The sample space is?
(Use a comma to separate answers)
There are _____ outcomes in the sample space
3. Determine the number...

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