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For the example in Section 5.3.1, y = 0 at x = 10, 20, 30, 40, and y = 1 at x = 60, 70, 80, 90. \a. Explain intuitively why for the model, logit(π) = α + βx.b. Report and its SE for the software you use.c. Add two observations at x = 50, y = 1 for one and y = 0 for the other. Report and its SE. Do you think these are correct? Why? d. Replace the two observations in (c) by y = 1 at x = 49.9 and y = 0 at x = 50.1. Report and its SE. Do you think these are correct? Why?
A bowl contains R red and W white chips. Suppose N chips are drawn without replacement from the bowl.
1. an article in the washington post on march 16 1993 stated that nearly 45 percent of all americans have brown eyes. a
A researcher wishes to estimate the number of households with two cars. How large a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 4%? A previous study indicates that ..
Formulate the null and alternative hypotheses for a hypothesis test. Identify the population and describe how to select a random sample for a hypothesis test. State in clear terms the conclusion that should be given if the null hypothesis is rejec..
A film alliance used a random sample of 50 U.S. citizens to estimate that the typical American spent 78 hours watching videos and DVDs last year. The standard deviation of this sample was 9 hours.
Select one psychological personality assessment instrument or inventory to serve as the basis of this assignment. Explore the psychological literature to find three to five articles that test the use of this inventory or assessment on obsessive-com..
consider a population consisting of ve values 1 3 3 5 7.a find the population mean.b list all possible samples of size
1. an experiment has four equally likely outcomes e1 e2 e3 and e4.a. what is the probability that e2 occurs?b. what is
Compute the range, variance, standard deviation, and coefficient of variation. Compute the Z scores. Are there any outliers?
in a study comparing four levels of factor a and two levels of factor b with six observations in each cell the sse3456
the systolic blood pressure of 18-year-old women is normally distributed with a mean of 120 mmhg and a standard
Suppose a worker needs to process 400 items. The time to process each item is exponentially distributed with a mean of 2 minutes, and the processing times are independent.
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