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The article "Fewer Parolees Land Back Behind Bars" (Associated Press, April 11, 2006) includes the following statement: "Just over 38% of all felons who were released from prison in 2003 landed back behind bars by the end of the following year, the lowest rate since 1979." Explain why it would not be necessary to carry out a hypothesis test to determine if the proportion of felons released in 2003 was less than .40.
Can people really identify their favorite brand of cola? Volunteer tasted coca-cola classic, pepsi, Diet coke, and Diet pepsi, with the results shown below.
a professor is interested in how many hours he students spend studying per week. she takes a random sample of 8 of her
Discuss the effects of deregulation on labor relationships in the air transportation industry. Consider the following:
mens heights are normally distributed with mean 69.0 inches and standard deviation 2.8 inches. mimi is designing a
Find the probability that a standard normal random variable will assume a value between: Find a z such that 70% of the area is above that value.
Can the college conclude that the students in the new program are significantly different from the rest of the freshman class? Use a two-tailed test with .05.
Expect the distribution of the data to be skewed to the left - Calculate the standard deviation
Johnson (1973) studied several different managerial aspects of university associated schools of nursing. Among the data she collected were the "extent of agreement (between the dean and the faculty) on the responsibilities for decision making" and..
What is the smallest value of C such that the probability in part (c) is more than 05? Do you find this result surprising?
The function that defines the probability distribution of a continuous random variable is a?For a continuous random variable x, the probability density function f(x) represents.
If we define event R as the event that a randomly chosen person was exposed to a radio advertisement and event T as the event that the person was exposed to a television commercial, define R T and R T in this context.
A biometric security devise using fingerprints erroneously refuses to admit 1 in 1000 authorized persons from a facility containing classified information. The device will erroneously admit 1 in 10,00,000 unauthorized persons.
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