According to the Census Bureau, 3.03 people reside in the
typical American household. A sample of 18 households in Arizona
retirement communities showed the mean number of residents per
household was 2.87 residents. The standard deviation of this sample
was 1.38 residents. At the .05 significance level, is it reasonable
to conclude the mean number of residents in the retirement
community household is less than 3.03 persons?
|a.||State the null hypothesis and|
the alternate hypothesis. (Round your answer to 2 decimal
H0: ? ?
H1: ? <
State the decision rule for .05 significance level.
(Negative amount should be indicated by a minus sign. Round
your answer to 3 decimal places.)
H0 if t <
Compute the value of the test statistic. (Negative
amount should be indicated by a minus sign. Round your answer to 3
| Value of the test|
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