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You work at a hospital that has always had about 100 emloyees staffed at night. You think that the number of employees staffed at night has recently decreased and would like to test this claim. If you run a hypothesis test, which of the following statements would fit your problem?
a) you have a two tail test.
b) your alternative hypothesis could be stated as the population mean is less than 100.
c) your null hypothesis could be stated as the population mean is greater than or equal to 100.
d) A, B, and C are correct
e) Just B and C are correct
Let x be average number of employees in group health insurance plan and y be average administrative cost as percentage of claims. Determine sample correlation coefficient.
The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your rea..
In textile industry, a manufacturer is interested in the number of blemishes or flaws occurring in each 100 feet of material. Of the following probability distributions, the one that most applies to this situation is the.
Assume you always reject null hypothesis, regardless of any sample evidence. Determine the probabiliyt of Type II error? P(Type II error).
Flip the tree. Label all endpoints, supply all branch probabilities, and calculate and label an endpoint probabilities.
Lotto, a lottery game conducted by the Ohio State Lottery Commission, consisted of selecting six numbers from the 42 numbers 1, 2, ...,41, 42.
Constructing a scatter plot and determining correlation. a. display the data in a scatter plot, b. calculate the correlation coefficient f, and c. make a conclusion about the type of correlation.
A company has been using the same advertising strategy for a number of years and over that time has had relatively constant monthly sales.
Which of the following best expresses the value of using percentages in data presentation? A. Provides for the calculation of marginals.
A study conducted at a certain college shows that 53% of the school's graduates find a job in their chosen field within a year of graduation. Find the probability that among 7 randomly selected graduates, at least one finds a job in his or her cho..
Give a brief definition and an example of the following: What does the correlation coefficient r describe? What about r squared?
A bag contains five purple ("P") blocks and one yellow ("Y") blocks. Without looking into the bag you reach in, take out a block, return the block to the bag, and then repeat the same process a number of times. Which of the following sequences of ..
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