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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Longevity: Honolulu USA Today reported that the state with the longest mean life span is Hawaii, where the population mean life span is 77 years. A random sample of 20 obituary notices in the Honolulu Advertizergave the following information about life span (in years) of Honolulu residents:
|
72 |
68 |
81 |
93 |
56 |
19 |
78 |
94 |
83 |
84 |
|
77 |
69 |
85 |
97 |
75 |
71 |
86 |
47 |
66 |
27 |
i. Use a calculator with mean and standard deviation keys to verify thatÂ
years and s ≈ 20.65years.
ii. Assuming that life span in Honolulu is approximately normally distributed, does this information indicate that the population mean life span for Honolulu residents is less than 77 years? Use a 5% level of significance.
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