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Final Exam Review (combined version)
Final Exam Review (combined version)
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Answers
1
The value of A would be:
80
65
60
74
2
Find the area to the left of the shaded region?
0.35
0.64
0.36
1 - 0.36
3
In a normal distribution, what percent of the data is within 3 standard deviation?
95%
Nearly all of it
68%
50%
4
What is the mode?
8
7
There is no mode
8 and 9
5
What is the sample space?
{ (R1, R2, R3, R4, R5, R6, G1, G2, G3, G4, G5, G6, B1, B2, B3, B4, B5, B6 }
{ (R1, R2, R3, G1, G2, G3, B1, B2, B3 }
{ red, green, blue }
{ 1, 2, 3, 4, 5, 6 }
6
A population has a mean of 130 and a standard deviation of 12.
3.5
3
2
4
7
Find the probability P (X>67)
0.941
0.092
0.059
0.886
8
How many different groups of 4 students can be formed from a total of 10 students?
_{10}C_4
_{10}P_4
9
Find the probability:
0.1877
0.1750
0.1184
0.1352
10
What is the probability that exactly 3 students from each class will be chosen?
0.352
0.255
0.019
0.138
11
How many different lunch combinations are possible if you can only pick 1 Main Dish, 1 Side, and 1 Dessert?
24
12
30
36
12
Which formula would you use?
binompdf
geomcdf
binomcdf
1 - binomcdf
13
What is the
expected value (mean) of the prize money
?
$5.00
$7.50
$0.25
$1.00
14
Question:
15
16
19
18
15
Which formula would you use?
1 - binomcdf
binompdf
binomcdf
geomcdf
16
Is the event "choosing a yellow marble" a simple event?
No
Yes
17
The boundaries of point E on the following frequency polygon are:
20
170 - 180
170
120 - 300
18
For the purposes of this DE Statistics class, are the events "Passes" and "Fails" the class mutually exclusive
No
Yes
19
Is the event "choosing red marble" a simple event?
Yes
No
20
What is the longest wait time that would still place a customer in the bottom 20% of waiting times?
38 days
41 days
24 days
30 days
21
Decide whether or not this is a binomial experiment:
No
Yes
22
The sum of all the probabilities in a probability distribution is:
0.5
1.5
1
0.98
23
Decide whether or not this is a binomial experiment:
No
Yes
24
How many 4 digit PIN numbers can be formed using only the digits 0 - 5 ?
1296
840
15
360
25
If one student is randomly selected, what is the probability that the student does not prefer
grapes or strawberries
?
0.48
0.20
0.28
0.52
26
Which one are you more likely to select?
a sample of 10 men
1 man
27
If a value has a z-score of 3, it would be classified as:
very unusual
normal
unusual
irrelevant
28
Find the probability:
96%
100%
94%
98%
29
The value of C would be:
60
80
65
74
30
If everything else remains the same, increasing the sample size has what effect on the size of the confidence interval?
It makes it larger
It makes it smaller
It is unchanged
All of these are possible
31
What is the probability of
A and B
occurring?
\frac{1}{52}
\frac{17}{51}
\frac{1}{4}
\frac{1}{208}
32
Assume the ACT score is selected at random from a population. Find the probability that 15 < x < 18
0.249
0.177
0.159
0.523
33
What is the mean?
7
8.1
7.25
8.43
34
Find the area to the right of the shaded region?
0.92
0.1788
0.08
0.8212
35
Find the margin of error for a 95% confidence interval
8.4
9.2
9.6
The ME cannot be determined
36
How many different ways can the first 3 students line up?
4,060
16,420
1,848
24,360
37
What is the minimum sample size needed to estimate the population mean given the values c = 0.80, s = 7.2, and E = 1
75
95
105
85
38
A population has a mean of 130 and a standard deviation of 12.
32.5
130
65
146
39
Find the standard deviation for this group:
338
23.6
26.4
332
40
If point D corresponds to the sample which was 80 BPM, what is it's corresponding z-score?
2
-1.5
-2
1.5
41
My favorite math teacher at ASH is:
Mr. Roy
Mr. Brad J. Roy
All of the above
Mr. Brad Roy
42
What are the characteristics of a normal probability distribution?
58% of the data lies within 1 standard deviation
The mean is equal to the standard deviation
The mean is 0 and the standard deviation is 1
The mean and the median are both 0
43
Decide whether or not this is a binomial experiment:
Yes
No
44
Find the margin of error C = 0.95 s = 1.8 n = 25
\pm1.36
\pm1.51
\pm0.82
\pm0.71
45
If a value has a z-score of -1.86, it would be classified as:
very unusual
unusual
irrelevant
normal
46
Is your GPA at ASH Qualitative or Quantitative
Qualitative
Quantitative
47
In a normal distribution, what percent of the data is within 1 standard deviation?
98%
34.1%
68.2
50%
48
Is the random variable discrete or continuous?
Continous
Discrete
49
If a value has a z-score of 2.5, it would be classified as:
normal
irrelevant
unusual
very unusual
50
For the standard normal distribution, find the probability that a z-score lies between z = -1.32 and z = 2.48
0.90
0.10
0.88
1.92
51
The sum of all the probabilities in a probability distribution is also known as:
Standard Error
Standard Deviation
Expected Solution
Expected Value
52
If everything else remains the same, increasing the C-level has what effect on the size of the confidence interval?
It is unchanged
It makes it smaller
All of these are possible
It makes it larger
53
Find the Z-score for the indicated area:
Z = 0.926
Z = 1.12
Z = 1.08
Z = 0.786
54
What is the mean weight of the offensive lineman starting for the Eagles?
348.38
422
337.6
319
55
What is the longest wait time that would still place a customer in the top 90% of waiting times?
55 days
57 days
62 days
59 days
56
Construct a 95% confidence interval
(36.4 , 41.7)
(42.6, 57.4)
(41.2 , 58.1)
(40.8 , 59.2)
57
Find the probability:
0.0035
0.9965
0.0134
0.00042
58
Is the following question Biased or Unbiased? Why is doing your MathXL good for You?
Biased
Unbiased
59
The median number of birds observed is:
22
24
There is no median
23
60
Is a person's Social Security Number Qualitative or Quantitative
Quantitative
Qualitative
61
The maximum number of birds observed was:
7
670
67
17
62
What percentage of students scored above a 32 on the last ACT test?
0.029
0.005
0.014
0.128
63
Is the following question Biased or Unbiased? What affect do you believe doing your MathXL will have on your grade?
Unbiased
Biased
64
Find the probability:
3.8%
68%
4.8%
52%
