Quiz 1_MATH302 Page 1 of 8
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Find the z-score for each student and indicate which one has a better relative position. An Art Major earned a
grade of 46 on an exam with f = 50 and s = 5; A Theat
Quiz 1_MATH302
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Quiz 1_MATH302
Part 1 of 3 -
Question 1 of 20
The difference between the first and third quartile is called the
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A.unimodal range
B.mid range
C.interquartile range
D.interdep
StatisticsMATH302 Midterm Examination
INSTRUCTIONS: This is an open-book and open note examination. You may use your textbook, notes, your computer and a calculator during the examination. However, you are not to consultin any manner-with anyone while you
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Question 1 of 25
Which measure of central location is meaningful when the data are categorical?
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A.The mode
B.The median
C.The mean
D.The range
Answer Key: A
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Questi
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Question 1 of 20
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Find the z-score for each student and indicate which one has a better relative position. An Art
Major earned a grade of 46 on an exam with
grade of 70 on an exam with
= 50 and s = 5; A Theate
Part 1 of 9 -
Question 1 of 25
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Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately
what percent of the observations are within two standard deviations of the mean?
A.50%
B.99.7
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Question 1 of 20
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 sc
Quiz 4 MATH302
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Comment: Eric,
Very good job. You did pretty well. Spend a little more time working on this material, and next time, you
will make an A. Therefore, keep at it, and you will do well.
Sincerely,
Vince
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Q
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Question 1 of 23
The chi-square goodness-of-fit test can be used to test for:
A.significance of sample statistics
B.difference between population means
C.difference between population variances
D.normality
An
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Question 1 of 17
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Two teams of workers assemble automobile engines at a manufacturing plant in Michigan. A
random sample of 145 assemblies from team 1 shows 15 unacceptable assemblies. A similar
random sample o
State of the Economy
Boom
Moderate Growth
Week Growth
No Growth
Probability
0.15
0.35
0.25
0.25
Probability x Return
Stocks
Gold
Boom
0.0375
-0.045
Probability x Return
Stocks
Gold
Boom
0.009375
0.0135
Market Return
25%
20%
5%
-14%
Gold Return
-30%
-9%
35
Given data is,
0.46 , 0.61 , 0.52 , 0.48 , 0.57 , 0.54
1. STATING THE RESEARCH QUESTION.
Is the mean weight of diamond = 0.5 karat
The population of interest is all diamond that processed.
The parameter of interest is the mean and the variable diamond wei
Step 1:
In which null hypothesis should, H0:>0.5
And the alternative hypothesis would be, Ha:0.5
Step 2:
Critical value: z statistics in 95% confidence limit=1.645
Step 3:
Test statistic. The test statistic is a z-score (z) defined by the subsequent equat
Given our problem: With a class of 45 students of which 15 are boys and 30 are girls: If 10 were selected
at random, what is the probability that exactly 3 boys will be selected?
First we need to find the number of combinations possible, for this I used E
Page
4-50
252
!=
35!10!=
45!/35!10!=
Combination Rule nCr=n!/(n-r)!r!
45C10=45!/(45-10)!10!
Total Combinations of 10 students out of 45
45
35
119622220865480000000000000000000000000000000000000000000.00
10333147966386100000000000000000000000000.00
3749692