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A class contains 30 students. Ten are female (F) and U.S. citizens (U); 12 are male (M) and U.S. citizens; 6 are female and non-U.S. citizens (N); 2 are male and non U.S. citizens. A name is randomly selected from the class roster and it is female. What is the probability that the student is a U.S. citizen?
Using the z table in Table E of Appendix C, what are the critical values for a two-tailed test when a = 0.03 .
Bags of tea are sampled to ensure proper weight. The overall average for samples is 8 ounces. Each sample contains 10 bags. The average range is 0.1 ounces.
An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of two emails per hour. Suppose the arrival of these emails is approximated by the Poisson distribution.
Which of the following statements regarding the coefficient of correlation is true. A value of 0.00 indicates two variables are not related.
A car manufacturer has redesigned the anti-theft device on one of its models to increase the time that it takes for a professional car thief to be able to steal the car.
One suggested environmental determinant of pediatric lung function is the level of cigarette smoking in the home. A researcher wants to do a pilot study with two groups:
Jack is doing a project in educational psychology. Before the experiment, he rank-orderes all his participants according to achievement test scores.
To what probabilities do each of the following sigma levels correspond to, based on a standard normal curve: 3 sigma, 4sigma, 5 sigma, and 6 sigma? (Hint: Use the NORMSDIST function in Excel.
What is the rejection point at α = .01 and indicate if you would accept or reject H o ?
sketch a histogram showing the population distribution - locate value of the population mean in your sketch and make an estimate of the standard deviation.
Convert each of the following z intervals to raw score x intervals:
Find the sample space for the number of outcomes (you don't need to list the possible outcomes, just how many possible outcomes there are).
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