Finding Normal Distribution Probability

Quiz
•
Mathematics
•
12th Grade
•
Hard
Anthony Clark
FREE Resource
11 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
1 min • 5 pts
X~N(23,11). P(X>20) =
(Give your answers to 3sf)
(Hint: Annex A for keystrokes)
2.
FILL IN THE BLANK QUESTION
1 min • 5 pts
3.
FILL IN THE BLANK QUESTION
1 min • 5 pts
X~N(1, 2). P(|X|<2) =
(Give your answers to 3sf)
(Hint: Page 4 of notes)
4.
FILL IN THE BLANK QUESTION
1 min • 5 pts
X~N(7, 3). P(X<m) = 0.125
m = ?
(Give your answers to 3sf)
(Hint: Refer to Annex for keystroke)
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
N(4,6)
N(4,12)
N(5,6)
N(5,12)
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Let X~height of a randomly chosen woman. X~N(160, 4) If, M=\frac{X_1+X_2+X_3+X_4}{4} , M~ ? (Hint: Page 13 of notes)
N(160,4)
N(160,1)
N(40,4)
N(40,1)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
28% of all Woodrow students believe Monday will be snow day. You take a sample of 50 students and find that 15 of them believe Monday will be a snow day. (The sample proportion is 15/50 or .3) What is the probability of getting a sample of size 50 that has 15 or more students who believe Monday will be a snow day?
0.376
Cannot be determined because the distribution of the sample proportion of samples of size 50 is not normal
0.624
0.99999
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