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Say whether or not R is a partial order and a total order on A. Show proof.
A= {a,b,c}, R= {(a,a),(b,a),(b,b),(b,c),(c,c)
A radio station wants to know if residents in their area are in favor of a proposed tax increase. They invite listeners to call in to respond to the poll. 645 of the 800 who responded were against the tax.
the number of robberies in each precinct in 2009 is what level of measurement?1. none2. nominal3. ratio4.
i. suppose an influenza epidemic strikes a city. in 10 of families the mother has influenza in 10 of families the
At the 5% level of significance, would we reject the null hypothesis that the mean breaking load is 510 pounds or more?
If several years pass and you want to conduct a new survey to estimate the mean length of time that car owners plan t keep their cars, how many randomly selected car owners must you survey?
Compute the coefficient of determination, r 2 , and interpret its meaning.
you are told that the population of the scores of iq test takers is normally distributed has a population mean of 100
A bag contains 4 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability that it is blue?
How does the efficiency of a regression predict the power of the t-test? How do robust standard errors change the comparison between hypothesis testing using OLS and robust regression? What does dependence in the e do to the t-test? what does non-no..
a study by hewitt associates showed that 79 of companies offer employees flexible scheduling. suppose a researcher
Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship.
In a sample of 100 M&M's, it is found that 8% are brown. Use a 0.05 significance level to test the claim that of the Mars candy company that the percentage of brown M&M's is equal to 13%. Identify the null and alternative hypotheses. Find the tes..
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