Question
(10 points) Note: For this problem, your answer should be rounded to two decimal places. In a particular municipality, it is believed that 25 percent
(10 points) Note: For this problem, your answer should be rounded to two decimal places.
In a particular municipality, it is believed that 25 percent of homes are not properly insulated. In order to testH0:p=.25vs. HA:p.25(where is the population proportion of homes that are not properly insulated) a random sample of 300 homes was selected. In the sample, it was found that 81 homes were not properly insulated.
If the null hypothesis is true, then the z-score for the sample proportion is:_____________
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Complex Variables and Applications
Authors: James Brown, Ruel Churchill
8th edition
73051942, 978-0073051949
