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9/13/15, 3:38 PM
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6. Box-and-whisker plots
Several years ago, the state of California launched an aggressive advertisement campaign
against smoking. We've interviewed students from
col
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9/13/15, 3:36 PM
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2. Interpreting a stem-and-leaf display
As part of a survey,
adults were asked, "How many hours did you spend at your job last
week?" The results are shown in the ste
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Midterm Exam, Date Submitted: 08/02/2015
5. Histograms for grouped data
A sample of
participants took part in a hearing experiment. Among other things, the
absolute hearing threshold (in decibels) was measured for each participant. The
measur
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9/13/15, 3:45 PM
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Final Exam, Date Submitted: 09/13/2015
24. Predictions from the least-squares regression line
Weber's law, a concept taught in most Introduction to Psychology courses, states that the
ratio of the intensit
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8. Chebyshev's theorem and the empirical rule
BIG Corporation produces just about everything but is currently interested in the lifetimes of
its batteries, hoping to obtain its share of a market booste
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Midterm Exam, Date Submitted: 08/02/2015
3. Interpreting relative frequency histograms
A realtor is displaying the histogram below, which summarizes the percentage of
appreciation in value (over the past ve years) for each of a sample of
hous
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Midterm Exam, Date Submitted: 08/02/2015
1. Discrete versus continuous variables
Which of the following variables are best thought of as continuous, which discrete? Indicate your
choice for each by checking the appropriate column.
Variable
Di
ALEKS: April Wright
9/13/15, 3:42 PM
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Final Exam, Date Submitted: 09/13/2015
17. t distribution
Use the calculator provided to solve the following problems.
Consider a t distribution with degrees of freedom. Compute
your answer to at least thr
ALEKS: April Wright
9/13/15, 3:40 PM
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Final Exam, Date Submitted: 09/13/2015
11. Tree diagrams for conditional probabilities
Ed's Tires and Brakes has two locations, one on the northwest side of town and one on the
southeast side of town. At b
ALEKS: April Wright
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Final Exam, Date Submitted: 09/13/2015
1. Discrete versus continuous variables
Which of the following variables are best thought of as continuous, which discrete? Indicate your
choice for each by checking
ALEKS: April Wright
9/13/15, 3:37 PM
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Final Exam, Date Submitted: 09/13/2015
4. Interpreting relative frequency histograms
The Moon Illusion refers, roughly speaking, to the common experience that the moon
appears larger (and closer to us) whe
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Midterm Exam, Date Submitted: 08/02/2015
20. Probability of dependent events
A department store is holding a drawing to give free shopping sprees to two lucky
customers. There are
customers who have entered the drawing: live in the town of
Ga
ALEKS: April Wright
9/13/15, 3:39 PM
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Final Exam, Date Submitted: 09/13/2015
9. Probability of independent events
Of the people who shed at Clearwater Park today,
had a shing license, and
not. Of the people who shed at Mountain View Park today
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9/13/15, 3:41 PM
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Final Exam, Date Submitted: 09/13/2015
14. Central limit theorem: Sample mean
According to records, the amount of precipitation in a certain city on a November day has a
mean of
inches, with a standard dev
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9/13/15, 3:41 PM
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Final Exam, Date Submitted: 09/13/2015
15. Standard normal values: Basic
Let be a standard normal random variable. Use the calculator provided to determine the
value of such that
.
Carry your intermediate
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9/13/15, 3:42 PM
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Final Exam, Date Submitted: 09/13/2015
18. Making reasonable inferences based on proportion statistics
After the premiere of the new comedy Bumblebee, moviegoers were asked in a quick poll
whether they lik
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9/13/15, 3:43 PM
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Final Exam, Date Submitted: 09/13/2015
19. Determining null and alternative hypotheses
The mean height of a certain kind of plant is
centimeters. Suppose we want to carry
out a hypothesis test to see if th