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What is a test of a proportion and give an example.
What test do you use when one sample is small and the other large?
Explain the difference between testing one sample with a parameter and testing two samples.
What are the likes and differences between the ttable and the z table?
When would you use a two population test with a large sample size in politics or workplace?
Could gender be used as a variable in the creation of a test of two populations? Why or why not.
What constitutes a small sample size in a test of two populations?
When testing two populations and one sample's size is small and the other sample's size is large?
What is the difference between a sample parameter (x-bar and s) and a proportion parameter (p)?
Discuss how a t test for a dependent variable can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students.
Following data represent concentration of dissolved organic carbon (mg/L) collected from 20 samples of organic soil. Sample standard deviation is?
A study 200 nurses found that of 125 females nurses, 56 had bachelor's degree; and of 75 male nurses; 34 had bachelor degrees. if a nurse is selected at random, find the probability that the nurse is a female nurse with a bachelor degree.
A professor in the psychology department would like to determine whether there has been a significant change in grading practices over the years.
Replacement times for new Ford Taurus GL automobiles are normally distributed with a mean of 7.1 years and a standard deviation of 1.4 years.
a) What is the probability that for any day, the number of special orders sent out will be more than 4? b) What is the standard deviation of the number of special orders sent out daily?
Problem based on decision tree - Evaluate the strategy that maximizes the manufacturer's expected net earnings.
A box contains four tickets, one marked with a star and the other three blank. One draw is made from this box at random.
With a 98% level of confidence a company producing street signs wants to make sure the length of their product is meeting quality standards.
The following frequency table lists the sales of an item and the number of times it has occurred. It was obtained from historical records.
How does a researcher determine the meaning of a score on a norm-referenced test such as an IQ test? Why are raw scores transformed to standardized scores, such as z-scores, in order to interpret those raw scores?
In a random sample of 35 trading days, the volume of a particular stock is recorded to determine whether the mean volume of the stock changed from its 2007 value of 35.14 million shares.
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