10.2 Researchers at a National Weather Center in the northeastern United States recorded the number of 90 degree days each year since records first started in 1875. The numbers form a normal shaped distribution with a mean of u = 9 and a standard deviation of o = 2.5. To see if the data showed any evidence of global warming, they also computed the mean number of 90 degree days for the most recent n = 4 years and obtained M = 11.7 days. Do the data indicate that the past four years have had significantly more 90 degree days than would be expected for a random sample from this populaton? Use a one-tailed test with alpha = .05. %3D %3D

10.2 Researchers at a National Weather Center in the northeastern United States recorded the number of 90 degree days each year since records first started in 1875. The numbers form a normal shaped distribution with a mean of u = 9 and a standard deviation of o = 2.5. To see if the data showed any evidence of global warming, they also computed the mean number of 90 degree days for the most recent n = 4 years and obtained M = 11.7 days. Do the data indicate that the past four years have had significantly more 90 degree days than would be expected for a random sample from this populaton? Use a one-tailed test with alpha = .05. %3D %3D

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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