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In a recent study about what workers do in their vacations, workers with more than 5 years in their position were interviewed. It was found there was a .45 probability that an employee had 2 weeks of vacation. Suppose you randomly pick 20 employees, what is the probability that 8 employees have 2 weeks of vacation?
medical researches claim that the mean body temperature is not equal 98.6 degrees f for healthy adults. temperatures
400 people are chosen from a large population that is 50% women. How likely is it that the sample has only 180 women or fewer? What is the value of the test statistic z?
A health care professional wishes to estimate the birth weight of infants. How large a sample must she select if she desires to be 90% confident that the true mean is within 6 ounces of the sample mean?
Explain the terms parameter and statistics. Make sure the concepts of population and sample are included in the definitions.
1.bags of chips are filled using a machine. because not all chips are the same size it is impossible to get the exact
a new light bulb is being considered for use in an office with computers. it is decided that the new bulb will only be
Is there evidence to suggest a difference in the mean waiting times at the four body shops?
According to the U.S. Census Bureau, the mean household income in the United States in 2000 was $63,091 and the median household income was $50,054.
a fair coin is tossed 7 times. what is the probability of tossing a head on the 7th toss given that the 6 preceding
Estimate, in millions of pounds, the amount of potato chips eaten during the game. Estimate the relationship of potato chips to popcorn. (twice as much, half as much, three times, none of these- pick one)
If your ANOVA shows no interaction between two factors: A) You must re-run the ANOVA in minitab without replicates. B) Start over taking more samples, the current results aren't valid without showing an interaction.
The weights of adult male beagles are normally distributed with a mean of 25 pounds and a standard deviation of 3 pounds. A beagle is randomly selected. Find the probability that the beagle's weight is less than 23 pounds.
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