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What is the difference between McNemar's Test and the chi-square test for 2X2 tables? When do we use each test?What is a discordant pair and concordant pair? Also, which type of pair is used in the McNemar's test?
X has a normal distribution with a mean of 80.0 and a standard deviation of 3.5. Find the following probabilities.
A DVD rental store wants to know what proportions of its customers are under age 21. A simple random sample of 500 customers was taken, and 375 of them were under age 21. Presume that the true population proportion of customers under age 21 is 0.6..
A certain disease occurs in 35% of the population. A test for the disease is fairly accurate: it misclassifies people with the disease as healthy 6% of the time and reports that a healthy person is diseased just 7% of the time.
Which of the following would have a binomial distribution and evaluate the binomial coefficient
Fit a linear regression model for bp against sodium. Do you think this is a model with a good fit? Why?
Using the simple test of independence (described in the lecture), decide if the events high calorie and high fiber are independent or dependent. Show your work.
One possible explanation for why some birds migrate and others maintain year round residency in a single location is intelligence.
Please assist regarding an index based on how people feel about the economy. In this case, the base was 1985 and set at 100.
If you were to draw a scatter plot of the number of women in the workforce versus the number of Christmas trees sold in the United States for each year between 1930 and the present
You want to determine if the sample result gives good evidence that the true amount of the compound is not equal to 2 gms. Carry out the test, find the P-value, and state your conclusion.
how many individuals will I need to sample if I want a 95% margin of error to be no more than 3%, I want to know if the results are significant at = 10%. With the information given.
Suppose that the two lists are combined to produce a new list of 18 values. What is the average (mean) of this new list?
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