Find the probability using mean
[DOC File]ASSIGNMENT Chapter 5
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The mean and standard deviation of the startle responses were 37.9 and 12.4,respectively. Assume that the startle response x for a person with the specified blood alcohol level is approximately normally distributed. a. Find the probability that x is between 40 and 50 milliseconds. b. Find the probability that x is less than 30 milliseconds. c.
[DOC File]Poisson distribution examples
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The mean is λ. The variance is λ. is the parameter which indicates the average number of events in the given time interval. Ex.1. On an average Friday, a waitress gets no tip from 5 customers. Find the probability that she will get no tip from 7 customers this Friday. The waitress averages 5 customers that leave no tip on Fridays: λ = 5.
[DOC File]Math 227 Statistics
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Find the probability that the sum is 8 or 11. Find the probability that the sum is 6, given that one of the dice shows an odd number. (12 pts: 4 ea.) Let x be the number of errors that appear on a randomly selected page of a book. The following table lists the probability distribution of x. X P(x) 0 0.73 1 0.16 2 0.06 3 0.04 4 0.01 Find the mean.
[DOC File]Z-Score Practice Worksheet
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A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to each of the following values: A score that is 20 points above the mean. z=2. A score that is 10 points below the mean. z=-1. A score that is 15 points above the mean z=1.5. A score that is 30 points below the mean…
[DOC File]Chebyshev's Inequality : P(
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Chebyshev's Inequality : is the probability that the value of X lies at least k standard deviations from its mean is at most where k is a positive number greater than 1. Example 6: If k=2 then the probability that the value of X lies at least 2 standard deviations from its mean is at most 1/4=0.25=25% or 75% of the values are within two ...
[DOC File]Exam 3 Practice Questions
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However, np =20*=4
[DOC File]Binomial Probability Worksheet II
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Find . the probability that: none of the components in the order are defective. there is at least one defective product in the order. There are at least two defective products in the order. 11. Approximately 3% of the eggs in a store are cracked. If you buy two . dozen eggs, what is the probability that. none of your eggs are cracked
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