Quiz 2_MATH302
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Quiz 2_MATH302
Part 1 of 6 -
Question 1 of 20
If P(A) = P(A|B), then events A and B are said to be
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A.exhaustive
B.mutually
exclusive
C.complementar
y
D.independent
Answer Key:
D
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Question 1 of 25
The total frequency of the data whose ogive is shown below is approximately
A.18
B.12
C.90
D.34
Answer Key: D
Part 2 of 9 -
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Question 2 of 25
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If A and B are any two events with P(A) = .8 and
Suppose that the percentage annual return you obtain when you invest a dollar in gold or
the stock market is dependent on the general state of the national economy as indicated
below. For example, the probability that the economy will be in "boom" state i
Question 1 of 20
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Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-),
spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For
scientific notation, a period MU
Quiz 1_MATH302
Part 1 of 3 -
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Question 1 of 20
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If a value represents the 95th percentile, this means that
A.95% of all values are above this value
B.95% of all values are below this value
C.there is a 5% chance that this v
Question 1 of 20
The alternative hypothesis is also known as the:
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A.research
hypothesis
B.null hypothesis
C.optional
hypothesis
D.elective
hypothesis
Answer Key:
A
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Question 2 of 20
Suppose that the mean time for a certain c
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Question 1 of 23
A company operates four machines during three shifts each day. From production records, the
data in the table below were collected. At the .05 level of significance test to determine if
the number of breakdowns is independ
During our course we have explored a number of different statistical
applications and tools. In this week's forum you are to share how you intend
to use one or more of the tools that we have examined in our course. Be
specific. Be sure to include a descri
Part 1 of 8 -
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Question 1 of 17
Members of the general adult population volunteer an average of 4.2 hours per week. A
random sample of 20 female college students and 18 male college students produced the
results given in the
Political polls typically sample randomly from the U.S population to investigate the percentage of voters who
favor some candidate or issue. The number of people polled is usually on the order of 1000. Suppose that one
such poll asks voters how they feel
Suppose that the demand for a companys product in weeks 1, 2, and 3 are each normally
distributed and the mean demand during each of these three weeks is 50, 45, and 65,
respectively. Suppose the standard deviation of the demand during each of these three
No doubt, every day we are exposed to statistics. They influence nearly every aspect of our
lives. Unfortunately, often times the statistics presented to us are incomplete, misleading,
or difficult to interpret meaningfully. For example, in the MATH110 co
A new process for producing synthetic diamonds can be operated at a profitable level only if the
average weight of the diamonds produced by the process is greater than 0.5 karat. To evaluate the
profitability of the process, a sample of six diamonds was g
Question 1 of 20
A scatterplot allows one to see:
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A.whether there is any relationship between two variables
B.what type of relationship there is between two variables
C.Both (a) and (b) are correct
D.Neither (a) nor (b) is correct
Answer K
Quiz 5
Chapter 10
1. The prices a non-member paid for various books and the prices a member paid for the
same publications are listed below.
Non-member
Member
Price, x
Price, y
58
32
42
22
46
20
32
16
25
19
75
58
35
34
63
48
Find the value of
A) 93,624
x