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1) Describe the chi-square test of independence.
2) How is this test different from the chi-square goodness-of-fit test?
3) Are the assumptions underlying each of these tests the same?
4) When presented with nonparametric data how do you know which of these tests to use?
The data follow. Males Females 27 25 25 29 19 18 10 23 16 20 22 15 14 19 (a) What statistical test should be used to analyze these data?
A sample of 64 observations is selected from a normal polulation with a population standard deviation of 15. The sample mean is 215. Ho: U>= 220 and H1: U
What control chart(s) would you use for this data and what are the final control limits?
What is the probability that it will crash at least two times in a given semester? What is the probability that it will not crash at all in a given semester?
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
You should use the hypergeometric distribution because you are sampling a small population without replacement.you are sampling a large population without replacement. You are sampling a small population with replacement.
Critically discuss the characteristics of integer programming problems. Provide specific instances in which you would use an integer programming model rather than an LP model. Provide real-world examples.
If "fair" coin is tossed four times and comes up heads all four times, probability of heads on the fifth trial is?
Suppose your instructor randomly surveyed his or her performance (i.e., students "graded" the teacher) over many years (assume an 'infinite' population). The frequency of ratings were as follows:
With a Rejection Region of 8, 9 or 10, what is the probability of a Type II error, if the job applicant has a probability of identifying the odd sample with p = 0.5?
A consumer organization estimates that over a 1-year period 17 percent of cars will require to be repaired once, 7 percent will need repairs twice, and 4 percent will require three or more repairs. What is the probability that a car chosen at rand..
How could the Central Limit Theorem apply in making a business decision? Try to provide an example from your current or future career.
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