Stats test review
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the probability of drawing two purple marbles from a box containing 5 purple, 3 green, and 2 orange marbles without replacement?
Back
P(both marbles are purple) = 2/9.
2.
FLASHCARD QUESTION
Front
What is the mode of the following set of numbers: 7, 14, 20, 3, 7, 14, 2, 14, 7?
Back
The mode is 7 & 14.
3.
FLASHCARD QUESTION
Front
What is the mean systolic blood pressure for males in a certain town?
Back
The mean systolic blood pressure is 120.
4.
FLASHCARD QUESTION
Front
What is the standard deviation of systolic blood pressure for males in a certain town?
Back
The standard deviation is 9.
5.
FLASHCARD QUESTION
Front
How do you calculate the Z-score for a given value?
Back
Z = (X - μ) / σ, where X is the value, μ is the mean, and σ is the standard deviation.
6.
FLASHCARD QUESTION
Front
What is the Z-score for Tina if she got a 31 on the ACT, with a mean of 23 and a standard deviation of 4?
Back
The Z-score is 2.
7.
FLASHCARD QUESTION
Front
What is the probability that a randomly selected male's systolic blood pressure will be higher than 122?
Back
The probability is approximately 0.412.
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