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Choose one stick figure to represent yourself, and identify which one it was in your answers to this exercise by giving the row number (1 to 10) and column number (1 to 10) where you reside.
a. Suppose you are in a class of 100 individuals represented by these stick figures. Your teacher randomly selects 10 people each class period and asks them to answer a question about the reading assignment. What are your chances of being in the sample each day?
b. Repeat the sample selection process 20 times, each time noting whether you made it into the sample. How many times did you make it into the sample? Does that surprise you, or is it about what you expected?
in studying the occurence of genetic characteristics the following sample data were obtained. at the 0.05 significance
What is an independent sample and what is a related sample? When should researchers use varying hypothesis tests for the different types of samples?
She does not know the true value of the population standard deviation, but is reasonably sure that the underlying population is approximately normally distributed. Should she use a z-test or a t-test in carrying out the analysis? Why?
A large computer company claims that their salaries are normally distributed with mean $50,000 and standard deviation 10,000. What is the probability of observing an income between $40,000 and $60,000?
a high school decides to add a new course that prepares randomly selected seniors to take a certain standardized test
If 1 man aged 18-24 is arbitrarily chosen, determine the probability that his serum cholesterol level is between 165 and 200.
No children that is equal to the value obtained by the census. Give the z statistic (rounded to two decimal places) and the P-value. What do you conclude?
What is the Cp index? If the target volume is 18.5, what is the Cpm index? Test a hypothesis to determine if Cp is less than 0.6 using α =0.05.
Consider a worker-paced line with three process steps, each of which is staffed with one worker. The sequence of the three steps does not matter for the completion of the product.
Do the health benefits of alcohol consumption depend on the type of alcohol and the amount consumed? The Harvard School of Public Health reviewed studies investigating the relation between alcohol consumption and health.
define population and sampling unit for selecting a random sample in each of the following cases. a hundred voters from
If someone had x=2 job changes, what does the least squares line predict for y, the annual salary?
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