A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 35 librarians from each city was randomly selected. The mean from the first city was $28,900 with a standard deviation of $2300. The mean from the second city was $30,300 with a standard deviation of $2100. Construct a 95% confidence interval for the difference between the two mean salaries. Can you conclude that the mean salaries of librarians from the first city is higher than the mean salaries of librarians from the second city? Explain.which test use z Or t and why
A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 35 librarians from each city was randomly selected. The mean from the first city was $28,900 with a standard deviation of $2300. The mean from the second city was $30,300 with a standard deviation of $2100. Construct a 95% confidence interval for the difference between the two mean salaries. Can you conclude that the mean salaries of librarians from the first city is higher than the mean salaries of librarians from the second city? Explain.which test use z Or t and why
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 58E: What is meant by the sample space of an experiment?
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) A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 35 librarians from each city was randomly selected. The mean from the first city was $28,900 with a standard deviation of $2300. The mean from the second city was $30,300 with a standard deviation of $2100. Construct a 95% confidence interval for the difference between the two mean salaries. Can you conclude that the mean salaries of librarians from the first city is higher than the mean salaries of librarians from the second city? Explain.which test use z Or t and why
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