Transcript Identify the SAMPLING TECHNIQUE used. A

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Click a number below to answer a question. (Drag the # behind
the trash can so you know which have been used!)
A sample of 120 employees of a company
is selected, and the average age is found
to be 37 years old.
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Board
Statistic or Parameter?
Statistic
ANSWER
ANSWER
ANSWER
A researcher interested in the ventilation of downtown office buildings
determines that 42.7% all downtown offices have ventilation problems.
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Statistic or Parameter?
Parameter
ANSWER
ANSWER
Based on a sample of 500 patients with high cholesterol, it was
found that 67% have heart disease.
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Statistic or Parameter?
Statistic
ANSWER
Survey responses of “good, better, best”.
QUALITATIVE OR QUANTITATIVE
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Board
ANSWER
QUALITATIVE
ANSWER
Telephone numbers.
QUALITATIVE
OR QUANTITATIVE
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Board
ANSWER
QUALITATIVE
Prices of DVDs.
QUALITATIVE
OR QUANTITATIVE
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QUANTITATIVE
ANSWER
Final grades of A, B, C, D, and F in a statistics class.
QUALITATIVE
OR QUANTITATIVE
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QUALITATIVE
ANSWER
Identify the SAMPLING TECHNIQUE used.
You want to determine the percentage of students
who have part-time jobs. You randomly survey
equal numbers of freshmen, sophomores, juniors,
and seniors.
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ANSWER
Stratified
Identify the SAMPLING TECHNIQUE used.
An ABC news reporter polls people as they pass
him on the street.
ANSWER
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Convenience
ANSWER
Identify the SAMPLING TECHNIQUE used.
A sobriety checkpoint at which every fifth driver
was stopped and interviewed.
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ANSWER
Systematic
Identify the SAMPLING TECHNIQUE used.
A Gallup Organization conducts a poll of US
voters. Computers are used to randomly generate
telephone numbers that are automatically called.
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Board
Simple
Random
ANSWER
Sample
I am designing a multiple choice test,
but want to make multiple versions to
be sure that there no cheating. If the
test has 9 questions, in how many
different ways can I order the questions
if every test consists of the same 9
questions?
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9! = ANSWER
362,880
Your garage code consists of four numbers.
How many different codes are possible ifyou
can’t repeat numbers
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5,040
ANSWER
The Board of Trustee’s at Harper College has
nine elected members. From those nine
membershow many different ways can a
president, vice-president, secretary and
treasurer be selected?
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Board
ANSWER
3,024
Hewlett Packard sends you a carton of 12
computer modems, 3 of which are defective.
If you randomly select 5 of the modems, what
is the probability that you choose at least one
that is defective
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Board
0.841
ANSWER
The Chicago Tribune frequently has a game
called JUMBLE, in which the reader has to
unscramble the letters to form words.
Saturday’s Tribune had the following letters,
how many distinct ways can you rearrange the
letters?
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Board
prvreoe
ANSWER
ANSWER
1,260
In the Connecticut Lottery, a player wins first prize by selecting 6 numbers
from 1 to 44 in any order. How many different tickets can be formed
Game and
what is the probability of winning?
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1
=1.42 x 10^-7
7,059,052 ANSWER
A carton contains 12 eggs, 3 of which are
cracked. If we randomly select 5 of the eggs for
decorating for Easter, what is the probability of
all the cracked eggs are selected
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Board
ANSWER
0.045
ADT home security systems have a code
consisting of four digits 0 through 9 that must
be entered in the correct sequence. If digits
can be repeated in the code how many
different possible codes are there?
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10,000
ANSWER
How many different ways can a foursome of 2 men and 2 women be
selected out of a group of 10 men golfers and 12 women golfers?
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2,970
ANSWER
st
A postal carrier distributes 1 class letters,
advertisements and magazines. For a certain day,
she distributed the
following
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Delivered
to:
1st
Class
Ads
Magazine Total
Home
325
406
203
934
Business
732
1021
97
1850
Total
1057
1427
300
2784
Find the probability that a letter is delivered is an ad or is
delivered to a business.
ANSWER
0.81
A manufacturing company has 3 factories: X, Y and Z. The daily output of each is
shown below.
Smoking
Habit
Not a HS
Graduate
HS
College
Graduate Graduate
Total
Smoke
6
14
19
39
Does not
smoke
18
7
25
50
Total
24
21
44
89
Find the probability that an employee smokes, given that he
or she graduated from college.
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Board
ANSWER
0.432
A manufacturing company has 3 factories: X, Y and Z. The daily output of each is
shown below.
Smoking
Habit
Not a HS
Graduate
HS
College
Graduate Graduate
Total
Smoke
6
14
19
39
Does not
smoke
18
7
25
50
Total
24
21
44
89
Find the probability that an employee is a high school
graduate and does not smoke.
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Board
ANSWER
0.079
A manufacturing company has 3 factories: X, Y and Z. The daily output of each is
shown below.
Smoking
Habit
Not a HS
Graduate
HS
College
Graduate Graduate
Total
Smoke
6
14
19
39
Does not
smoke
18
7
25
50
Total
24
21
44
89
Find the probability that an employee smokes did not
graduate from HS or does not smoke.
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Board
ANSWER
0.75
A coin is tossed five times, find the
probability of getting at least one tail.
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ANSWER
0.969
In a certain high-risk group, the chances of a person having
suffered a heart attack are 55%. If six people are chosen at
random, find the probability that at least one will have had a
heart attack.
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Board
ANSWER
0.992
A recent poll says that 46% of all Americans suffer great
stress at least once a week. If three people are
selected at random, find the probability that all three will
say that they suffer great stress at least once a week.
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Board
ANSWER
0.097
For the data below, calculate the
mean.
Height
Frequency
50-52
5
53-55
8
56-58
12
59-61
13
62-64
11
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Board
58.04
ANSWER
For the data below, calculate the
variance.
Height
Frequency
50-52
5
53-55
8
56-58
12
59-61
13
62-64
11
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Board
ANSWER
0.84
What is the mean?
2, 7, 9, 15, 25, 27, 29
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16.3
ANSWER