Sleep study shows that sleep time
A sleep study shows that sleep time follows a normal distribution with the mean of 7 hours and a standard deviation of .5 hours. What is the probability that someone will sleep for 6 or less hours?
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What are chance and assignable causes of variability? What part do they play in the operation and interpretation of a Stewhart control chart?
A repeated-measures ANOVA was conducted for study comparing three treatment conditions with a total of 12 scores (N = 12, n = 4). This ANOVA produces an F-ratio of 2.10. For this result, what is the correct statistical outcome?
Aluminum usage in automobiles has been climbing steadily. As currently as 1990, there were no aluminum-structured passenger cars in production anywhere in world, but by 1997, there were seven of them, including the Audi A8.
Let Y1, Y2, . . . , Yn be independent and identically distributed with following probability density function f(y) = 4(1 - y) ^3, 0 < y < 1 f(y)= 0 otherwise
Of these students, 90 earned an A in calculus, 66 earned an A in physics, and 45 "mystically" received an A in both calculus and physics. What is the probability that a randomly chosen student earned an A in at least one of the two courses?
Four MIT engineering students stand in line at the movie theater to see The Truth About An Inconvenient Truth. Into how many different ways can the students be arranged?
A company finds errors on 10% of its invoices. if a random sample of 100 invoices is drawn, use normal aproximation to the binomial to find the probability of fetecting at most 5 invoices with errors.
Six lifeguards are available for duty one afternoon. There are five lifeguard stations. In how many ways can five lifeguards be chosen for the stations?
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