Math 246
Exam #2 - Practice
SUMMER 2017
Name: _
1. (3 points) True or False: If a regular six-sided die is rolled 150 times and 25 of the rolls result
in a 4, then the empirical probability of a 4 is
Math 246
Exam 1
June 6, 2016
Name _
This exam consists of 11 questions totaling 105 points (though your grade will only be out of 100
points, so it is possible to score above 100%). It has been put to
Math 246
Exam 1
June 6, 2016
Name _
This exam consists of 11 questions totaling 105 points (though your grade will only be out of 100
points, so it is possible to score above 100%). It has been put to
Math 246
Exam 1
June 6, 2016
Name _
This exam consists of 11 questions totaling 105 points (though your grade will only be out of 100
points, so it is possible to score above 100%). It has been put to
Chris Flaten
Assignment Homework 7 due 12/20/2017 at 11:59pm CST
1. (1 point) Empathy means being able to understand what
others feel. To see how the brain expresses empathy, researchers
recruited 16
Chris Flaten
Assignment Homework 4 due 12/20/2017 at 11:59pm CST
246 Fall 2017 Khoshnasib
Subject
Spanish
Statistics
Physics
Biology
1. (1 point) Consider the histogram shown below.
Mean
44
70
60
77
S
Chris Flaten
Assignment Homework 6 due 12/20/2017 at 11:59pm CST
A. there is a positive association between height and
volume.
B. there is an outlier in the plot.
C. both A and B.
D. neither A nor
Chris Flaten
Assignment Homework 10 due 12/20/2017 at 11:59pm CST
1. (1 point)
One die is rolled. Let:
246 Fall 2017 Khoshnasib
3. (1 point)
A small high school offers courses in 3 languages: Arabic,
Chris Flaten
Assignment Homework 3 due 12/20/2017 at 11:59pm CST
246 Fall 2017 Khoshnasib
How many community colleges charged between $ 825 and $
849.99?
A. 15
B. 11
C. 68
D. 22
2. (1 point) For a
Chris Flaten
Assignment Homework 5 due 12/20/2017 at 11:59pm CST
246 Fall 2017 Khoshnasib
B. Bar graphs are more similar to histograms, so they
allow the reader to compare analyses of categorical and
Chris Flaten
Assignment Homework 2 due 12/20/2017 at 11:59pm CST
1. (1 point) The table below shows how blood types are distributed in the U.S. population.
246 Fall 2017 Khoshnasib
Below is a partiall
Chris Flaten
Assignment Homework 1 due 12/20/2017 at 11:59pm CST
D. County of residence.
E. None of the above.
1. (1 point) A choral conductor has 1596 singers in her choir.
Some of them are profess
Chris Flaten
Assignment Homework 19 due 05/17/2017 at 11:59pm CDT
246 Fall 2017 Khoshnasib
you need, so that you can use a normal distribution to approximate p,
the sample proportion of people who fo
Math 246
Exam 1
June 6, 2016
Name _
This exam consists of 11 questions totaling 105 points (though your grade will only be out of 100
points, so it is possible to score above 100%). It has been put to
Clicker Quiz Key Sec 5.2
25. All the probabilities are between 0 and 1 and they add up to 1.
26. No, it cannot. If the probability of walking was 0.15 then the sum of all the probabilities would
b
Ex, ee^99,n-1
P(e or f)= p(e) + P(f) P(e and f)
Independent: one does not change others probability.
Compliment rule P(e^c) = 1 P(e)
Multiplication P(e and f) = P(e) x P(f) 68% in one st. dev 95% in t
P(e or f)= p(e) + P(f) P(e and f)
Compliment rule P(e^c) = 1 P(e)
Independent: one does not change others probability.
Multiplication P(e and f) = P(e) x P(f)
Binomial qualifiers: fixed # of trials, t
Clicker Quiz Key Sec 5.3
9. There is no connection between the lotteries. Whether you win or lose in Missouri, the
probability of winning in Illinois remains the same.
Solutions Sec 5.3
cfw_:2 Mlg
Clicker Quiz Key Sec 6.1
14. All the probabilities are between 0 and 1 and they add up to 1
15. See the solutions below
16. See the solutions below
Solutions Sec 6.1
@3
OJ 'Dwtmetiet *) 0 \l 232
Clicker Quiz Key Sec 5.1
16. Unusual means an event has a low probability of occurring. We often use the probabilities of
1%, 5% and 10% as cutoffs to determine if something is unusual, depending on
Clicker Quiz Key Sec 5.4
Solutions Sec 5.4
n
g 1 M 1 cfw_i cfw_J J I ' m
GD M32, +neJ mh p1 : aafgmw r ma ber (:3,va Elk/1:11
P1112: (mmW L Rama
m z A PQHEE ~27 PQFIE): mT-BZE
(ED 9?: 23% Am cance
Chris Flaten
Assignment Homework 18 due 05/18/2017 at 11:59pm CDT
c. Is the statement in part (a) still true if the sample size is 16
instead of 49? Why or why not?
1. (1 point) The following table pr