Problems 87 and 88 refer to the data in the following table, obtained from a random survey of 1 , 000 residents of a state. The participants were asked their political affiliations and their preferences in an upcoming election. (In the table, D = Democrat , R = Republican , and U = Unaffliliated . ) Politics. If a state resident is selected at random, what is the (empirical) probability that the resident is (A) A Democrat or prefers candidate B ? What are the odds for this event? (B) Not a Democrat and has no preference? What are the odds against this event?
Problems 87 and 88 refer to the data in the following table, obtained from a random survey of 1 , 000 residents of a state. The participants were asked their political affiliations and their preferences in an upcoming election. (In the table, D = Democrat , R = Republican , and U = Unaffliliated . ) Politics. If a state resident is selected at random, what is the (empirical) probability that the resident is (A) A Democrat or prefers candidate B ? What are the odds for this event? (B) Not a Democrat and has no preference? What are the odds against this event?
Solution Summary: The author calculates the probability that the state resident selected randomly is affiliated with a Democrat party or prefers candidate B.
Problems
87
and
88
refer to the data in the following table, obtained from a random survey of
1
,
000
residents of a state. The participants were asked their political affiliations and their preferences in an upcoming election. (In the table,
D
=
Democrat
,
R
=
Republican
,
and
U
=
Unaffliliated
.
)
Politics. If a state resident is selected at random, what is the (empirical) probability that the resident is
(A) A Democrat or prefers candidate
B
? What are the odds for this event?
(B) Not a Democrat and has no preference? What are the odds against this event?
1. a scientist observed a bacterium in a microscope. it measured about .0000029 meter in diameter which of the following is closest to it? A- 2 x 10^-6, B- 2 x 10^-5, C- 3 x 10^-5, or D- 3 x 10^-6
2.express the product of 500 and 400 in scientific notation. is it 2 x 10^5 or 2 x 10^4 or 2 x 10^3 or 20 x 10^4
Example 4 (Part 1) One of the datasets in the Lock book
contains information about 215 countries of the world. One
of the variables is the percentage of people in the country
who have access to the internet. We have data for 203 of
those countries. The plot on the right shows a dotplot of
the data.
1. What are the cases?
Population
n = 203, mean = 43.024
median = 43.5, stdev = 29.259
20
2. What does each dot on the dotplot represent?
15
10
5
20
40
43.024
60
80
3. What type of data is do we collect from the cases, quantitative or categorical?
find the rate of return on this investment for account
Chapter 8 Solutions
Finite Mathematics for Business, Economics, Life Sciences, and Social Sciences (14th Edition)
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