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Why be Normal?? 11 Apps Flashcards | StudBud
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Why be Normal?? 11 Apps
Why be Normal?? 11 Apps
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Calculating Normal Distribution Probability #normaldistribution
Flashcards
17 cards
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Practice quiz
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Questions
17
Answers
1
What percent of the data lies above the mean?
50
95
13.5
32
2
What does this symbol mean when working with statistics?
standard deviation
the letter o waving
mean
normal distribution
3
If 200 students took the test, how many scored between 76 - 82? (mean 80, standard deviation 2).
136
163
168
190
4
What is the
P(76 < x < 82)?
69.15%
53.28%
16%
85.15%
5
What is the
P(x < 35)?
34%
16%
16.5%
2.5 %
6
The SD is 10 and the mean is 100. What is the probability of your IQ being greater than 120?
16%
2%
3.5%
2.5%
7
What
range
represents
95%
of the data?
27 to 51
21 to 57
33 to 45
27 to 45
8
What is the
P(at least 86)?
69.15%
30.85%
6.68%
93.32%
9
What is the
P(at most 78)?
0.5%
30.85%
84.13%
69.15%
10
What percent of the data falls within 1 standard deviation of the mean?
95
34
68
100
11
The standard deviation is 2 and the mean is 80. What is the probability of scoring between 74 - 82?
95%
84%
50%
99.7%
12
What is the
P(x > 42)?
65.54%
50%
30.85%
69.15%
13
What is the
P(x > 51) ?
57%
2.5%
97.5%
16%
14
What is the
P(at least 45)?
65.54 %
69.15%
61.69%
33.41%
15
What does this symbol represent in statistics?
normal distribution
population
standard deviation
mean
16
What is the
standard deviation
of the following Normal Distribution curve?
6
5
42
7
17
What is the
P(80 < x < 90)?
0.62%
49.38%
50%
99.38%
