3. The average number of hours of sleep per night that a college freshman gets is 6.5 with a standard deviation of 2.8 hours. If 36 college freshmen are randomly chosen, the probability that they average at least 8 hours of sleep per night is about (а) .001 (b) .536 (c) .464 (d) .999
3. The average number of hours of sleep per night that a college freshman gets is 6.5 with a standard deviation of 2.8 hours. If 36 college freshmen are randomly chosen, the probability that they average at least 8 hours of sleep per night is about (а) .001 (b) .536 (c) .464 (d) .999
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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Transcribed Image Text:3. The average number of hours of sleep per night that a college freshman gets is 6.5 with a standard
deviation of 2.8 hours. If 36 college freshmen are randomly chosen, the probability that they average at
least 8 hours of sleep per night is about
(a) .001
(b) .536
(с) 464
(d) .999
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