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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?
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
Compute a seasonalized or adjusted sales forecast.
A random sample of 1440 current job applicants results in 61 failures (based loosely on data from the American Management Association).
In a normal distribution of 1,000 aptitude test scores, with a mean of 60 and a standard deviation of 8, how many scores fall:
Does the normal distribution yield a good approximation of the actual results?
A member of Congress wants to determine her popularity in a certain part of the state. She indicates that the proportion of voters who will vote for her must be estimated within plus or minus 2 percent of the population proportion.
Findout the probability using normal approximation for the provided values. Findout the specified probability from a table of Normal probabilities.
Suppose that X1,..,Xn form a random sample from the normal distribution with unknown mean M and unknown standard deviation S, and let m and s denote the MLEs of M and S. for the sample size n=17, find a value of k such that P(m > M +ks) = 0.95
Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level.
In the following questions, you should demonstrate your understanding of sampling distribution:
Identify the independent and dependent variables. Perform a regression analysis on the data.
In the Willow Brook National Bank waiting line system (see Problem 1), assume that the service times for the drive-up teller follow an exponential probability distribution with a service rate of 36 customers per hour or 0.6 customer per minute.
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