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It is believed that animals leving in northerm regions have shorter appendages than animals Iiving in southern regions. Random samples of birds were selected from each group and wing lengths for birds (in millimeters) were measured. The following table gives summary statistics Region Northern (N) Southern (S) Difference (d = N S) Average Standard deviation 33 116.5 1.8 33 117.1 3.7 33 -0.6 1.7 (a) Find an 80% confidence interval for the mean difference of wing lengths of birds between the northern regions and the southern regions. (Round your answers to 4 decimal places, if needed) (b) Based on this confidence interval, is there enough evidence to support the belief? O No since the interval is completely below 0. O Yes, since the interval contains 0 O Yes since the interval is completely below 0. O No, since the interval contains 0 Check

It is believed that animals leving in northerm regions have shorter appendages than animals Iiving in southern regions. Random samples of birds were selected from each group and wing lengths for birds (in millimeters) were measured. The following table gives summary statistics Region Northern (N) Southern (S) Difference (d = N S) Average Standard deviation 33 116.5 1.8 33 117.1 3.7 33 -0.6 1.7 (a) Find an 80% confidence interval for the mean difference of wing lengths of birds between the northern regions and the southern regions. (Round your answers to 4 decimal places, if needed) (b) Based on this confidence interval, is there enough evidence to support the belief? O No since the interval is completely below 0. O Yes, since the interval contains 0 O Yes since the interval is completely below 0. O No, since the interval contains 0 Check

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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It is believed that animals Iiving in northerm regions have shorter appendages than animals Iiving in southern regions. Random samples of birds were selected from each group and wing lengths for birds (in millimeters) were measured. The following table gives summary statistics Region Northern (N) Southern (S) Difference (d = N S) Average Standard deviation 33 116.5 1.8 33 117.1 3.7 33 0.6 1.7 (a) Find an 80% confidence interval for the mean difference of wing lengths of birds between the northern regions and the southern regions. (Round your answers to 4 decimal places, if needed) (b) Based on this confidence interval, is there enough evidence to support the belief? O No, since the interval is completely below 0. O Yes, since the interval contains 0 O Yes since the interval is completely below 0. O No, since the interval contains 0. Check
Transcribed Image Text:It is believed that animals Iiving in northerm regions have shorter appendages than animals Iiving in southern regions. Random samples of birds were selected from each group and wing lengths for birds (in millimeters) were measured. The following table gives summary statistics Region Northern (N) Southern (S) Difference (d = N S) Average Standard deviation 33 116.5 1.8 33 117.1 3.7 33 0.6 1.7 (a) Find an 80% confidence interval for the mean difference of wing lengths of birds between the northern regions and the southern regions. (Round your answers to 4 decimal places, if needed) (b) Based on this confidence interval, is there enough evidence to support the belief? O No, since the interval is completely below 0. O Yes, since the interval contains 0 O Yes since the interval is completely below 0. O No, since the interval contains 0. Check
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