High Temperatures in January Daily weather observations
Chapter 8, Problem 4(choose chapter or problem)
High Temperatures in January Daily weather observations for southwestern Pennsylvania for the first three weeks of January show daily high temperatures as follows: 55, 44, 51, 59, 62, 60, 46, 51, 37, 30, 46, 51, 53, 57, 57, 39, 28, 37, 35, and 28 degrees Fahrenheit. The normal standard deviation in high temperatures for this time period is usually no more than 8 degrees. A meteorologist believes that with the unusual trend in temperatures the standard deviation is greater. At a _ 0.05, can we conclude that the standard deviation is greater than 8 degrees? Source: www.wunderground.com
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