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Research at the University of Toledo indicates that 50 percent of students change their major area of study after their first year in a program. A random sample of 100 students in the College of Business revealed that 48 had changed their major area of study after their first year of the program. Has there been a significant decrease in the proportion of students who change their major after the first year in this program? Test at the .05 level of significance.
Determine the variance of firm's profit for the month.
Before the rush began for Christmas shopping, a department store had noted that the percentage of its customers who use the store's credit card, the percentage of those who use a major credit card, and the percentage of those who pay cash are the ..
The consequences of the central limit theorem is that if we end up averaging the measurements of a particular quantity, the distribution of an average tends on going toward a normal one?
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What is the answer to the following unsorted data shows the number of traffic tickets given each day by Deputy Fife over the last eleven days.
Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using z test to test differences between two means?
A magazine article stated that the average age of women who are getting married for the first time is 26 years. A researcher decided to test this hypothesis at α = .02. She selected a sample of 25 women who were recently married for the first time..
Assume a random sample of 50 architects and engineers is selected. How likely is it that the random sample contain five or fewer women in these positions.
If Larry gets a 70 on a physics test where the mean is 65 and the standard deviation is 5.8, where does he stand in relation to his classmates?
A consumer organization wants to know if there is a difference in the price of a particular toy at three different types of stores. The price of the toy was checked in a sample of five discount toy stores, five variety stores
Based on the results of the test, can the consumer group report in its next publication that the tires last less than 60,000 miles?
Using your workplace, present or prior, or an organization with which you are affiliated, identify a dependent variable and an independent variable of interest to you
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