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A building is 385 feet tall. For a class project, Kari is to make a scale model of the building to place in the front hall display case. The display case is 30 inches tall. Which scale will allow her to make the tallest model that will fit in the display case?
A random sample of 200 workers from Factory A showed that 130 were satisfied with their job. Formulate and test the appropriate hypotheses at the 1% level of significance
What is the value of the population mean? What is the best estimate of this value?
Suppose that the incident rate of a particulat kind of accient is 1/10,000 persons. In a town of 50,000 persons, what is the probability that there is no accident of this kind?
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
There are 137 tickets in a hat and my name is on 3 of them. If someone draws 20 tickets out of the hat, what is the probability of my name being on one of those 20tickets.
30% of college freshmen support increased military spending. If 12 college freshmen are randomly selected, find the probability that more than 5 selected students support increased military spending.
Suppose the population mean is 50.6 pounds with a population standard deviation of 1.62 pounds. Suppose we take thousands of samples with a sample size of 5.
Explain the differences between longitudinal and cross sectional business research studies. Which two types of probability sampling are best suited for business research and statistical data analysis, and why?
In ANOVA, which of the following is not affected by whether or not the population means are equal?
There are three loan officers at Farmer National Bank. All decisions on mortgage loans are made by one of these officers. The president of the bank would like to be sure that the rejection rate is about the same for the three officers.
illustrate briefly how an experimental study is conducted. What is the difference between the two types of variables used.
Time to help a stranger was investigated by a group of undergraduate psychology majors as a part of their Introduction to Research Methods course.
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