Question
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(wherepis the population proportion
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(wherepis 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 93 homes were not properly insulated.
If the null hypothesis is true, then the z-score for the sample proportion is:
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Cambridge International AS & A Level Further Mathematics Coursebook
Authors: Lee Mckelvey, Martin Crozier
1st Edition
1108403379, 978-1108403375
