Unit 6 - Probability Distributions

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•
Mathematics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What shape is a normal distribution curve?
Back
Bell curve
2.
FLASHCARD QUESTION
Front
What is the probability that exactly 2 of the first 20 blood donors have Type B blood if 11% of the U.S. population has Type B blood?
Back
0.282
3.
FLASHCARD QUESTION
Front
What percent of students in a course at UCDavis have a GPA between 2.9 and 3.8 if the mean GPA is 3.2 and the standard deviation is 0.3?
Back
81.5%
4.
FLASHCARD QUESTION
Front
What proportion of weeks would you expect to have more than 7 accidents if the mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5?
Back
0.3446
5.
FLASHCARD QUESTION
Front
Using the Empirical Rule, how many of the 500 golf members at the Mathy Country Club are younger than 34 if the ages of golfers are normally distributed with a mean of 38 and a standard deviation of 4?
Back
80
6.
FLASHCARD QUESTION
Front
What is the Empirical Rule in statistics?
Back
The Empirical Rule states that for a normal distribution, approximately 68% of the data falls within one standard deviation of the mean, 95% within two standard deviations, and 99.7% within three standard deviations.
7.
FLASHCARD QUESTION
Front
Define 'mean' in the context of probability distributions.
Back
The mean is the average value of a set of numbers, calculated by summing all values and dividing by the number of values.
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