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Teaching Since: | May 2017 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
15. Fuel Consumption The standard deviation of the fuel consumption of a certain automobile is hypothesized to be greater than or equal to 4.3 miles per gallon. A sample of 20 automobiles produced a standard deviation of 2.6 miles per gallon. Is the standard deviation really less than previously thought? Use a = 0.05 and the
P-value method.
 16. Apartment Rental Rates A real estate agent claims that the standard deviation of the rental rates of
apartments in a certain county is $95. A random sample of rates in dollars is shown. At a = 0.02, can the claim be refuted?
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feels that in his prison the percentage is even higher. He surveys 400 inmates’ records and finds that 260 of the inmates are drug offenders. At a = 0.05, is he correct?
Source: New York Times Almanac.
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