random variable x discrete

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.7: Probability And Odds
Problem 2C
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Decide whether the random variable x is discrete or continuous.
x represents the total number of die rolls required for an individual to roll a five.
Is the random variable x discrete or continuous? Choose the correct answer below.
Continuous
Discrete
Transcribed Image Text:Decide whether the random variable x is discrete or continuous. x represents the total number of die rolls required for an individual to roll a five. Is the random variable x discrete or continuous? Choose the correct answer below. Continuous Discrete
A curve has area 0.601 to the left of 65 and area 0.399 to the right of 65. Could this curve be a density curve for some variable? Explain your answer.
Choose the correct answer below.
A. The curve could not be a density curve because the total area under the curve is greater than 1.
B. The curve could be a density curve because the total area under the curve is equal to 1.
C. The curve could not be a density curve because the total area under the curve is less than 1.
D. There is insufficient information to determine if this curve could be a density curve for some variable.
Transcribed Image Text:A curve has area 0.601 to the left of 65 and area 0.399 to the right of 65. Could this curve be a density curve for some variable? Explain your answer. Choose the correct answer below. A. The curve could not be a density curve because the total area under the curve is greater than 1. B. The curve could be a density curve because the total area under the curve is equal to 1. C. The curve could not be a density curve because the total area under the curve is less than 1. D. There is insufficient information to determine if this curve could be a density curve for some variable.
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