Mathematics, 06.08.2021 16:10 dhhdndnd
According to the Census Bureau, 3.40 people reside in the typical American household. A sample of 21 households in Arizona retirement communities showed the mean number of residents per household was 2.70 residents. The standard deviation of this sample was 1.17 residents. At the 0.10 significance level, is it reasonable to conclude the mean number of residents in the retirement community household is less than 3.40 persons?
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Ana earns 2.5% simple interest on $2,000 in her savings account. she does not make any deposits or withdrawals. after 3 years, how much interest will ana have earned on her savings account?
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Mathematics, 22.06.2019 05:30
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According to the Census Bureau, 3.40 people reside in the typical American household. A sample of 21...
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