No matter how often I try this, none of my answers fit the options. I keep coming up with (-3047, 247). How do I find the correct answer? A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 15 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 μ1 - μ2. Select one: A. (-4081, 597) B. (-2871, 567) C. (-2054, 238) D. (-3125, 325)

No matter how often I try this, none of my answers fit the options. I keep coming up with (-3047, 247). How do I find the correct answer? A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 15 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 μ1 - μ2. Select one: A. (-4081, 597) B. (-2871, 567) C. (-2054, 238) D. (-3125, 325)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 3E

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Question

100%

No matter how often I try this, none of my answers fit the options. I keep coming up with (-3047, 247). How do I find the correct answer?

A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 15 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 μ₁ - μ₂.

Select one:

A. (-4081, 597)

B. (-2871, 567)

C. (-2054, 238)

D. (-3125, 325)

Expert Solution