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Consider a population consisting of the number of teachers per college at small two-year colleges. Suppose that the number of teachers per college has a mean of 175 and a standard deviation of 15.
1. Use Tchebysheff's Theorem to make a statement about the percentage of colleges that have between 145 and 205 teachers.
2. Assume that the distribution is bell shaped. What fraction of the colleges have more that 190 teachers.
Find the distribution of X, i.e., the possible values and their probabilities. (You may note that altogether 45 different pairs can be selected from {0,1,...,9}.)
let x have a poisson distribution with mean m. show that the most likely value for x to assume is m with the following
Your supervisor has asked you to conduct a survey about consumers' buying habits. For this task, you surveyed 100 men and 100 women at a local shopping mall.
Illustrate how you could use the interrupted time series design to naswer a real world research question through the use of archival data.
Compare and contrast internal and external validity. Describe and give examples of research questions for which external validity is a primary concern. Describe and give examples of research questions in which internal validity is a primary concer..
When the data for the 27 subjects are 14 binomial observations (for the 14 distinct levels of LI), the deviance for this model is 15.7 with df = 12. Is it appropriate to use this to check the fit of the model? Why or why not? b. The model that als..
What role do z-scores play in this transformation of data from multiple distributions to the standard normal distribution? What is the relationship between z-scores and percentages?
question 1according to one study it has been claimed that 70 of all single men in montreal would welcome a woman taking
A survey found that 85% of women in a given city enjoy shopping online. Suppose you randomly selected 6 women from the city and ask them whether or not they enjoy shopping online. Find the probability that exactly 4 say they enjoy shopping online.
Can it be concluded that, X, number of boys in two-child families of preeminent scholars, is binomiallydistributed? Let α=0.05.
Technical: After developing your regression model, check to make sure the technical assumptions are satisfied. Comment on any points that would concern you based on the diagnostics.
a popular doughnut shop makes 5000 doughnuts per day of which 30 1500 doughnuts have chocolate icing. andy likes
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