1. A county in California launched a voluntary water conservation campaign. A study was conducted and...
1. A county in California launched a voluntary water conservation campaign. A study was conducted and 484 homes were randomly sampled. The water board wanted to know whether the data supported the claim that fewer than half the households in the country reduced water consumption.
a. What is the standard error of the sampling distribution of the hypothesized value?
b. If the test statistic was -2.0, how many of the sampled homes reduced their water consumption?
c. What would be the decision if alpha was 0.05?
d. How many more homes would have needed to reduce their consumption in order to fail to reject the null hypothesis?
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1. A county in California launched a voluntary water
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