'12_ A random sample of 100 recorded deaths in the United States during the past year showed an average life span of 71.8 years. Assuming a population standard deviation of 8.9 years; does this seem to indicate that the mean life span today is greater than 70 years? Use a 0.05 level of significance.'
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Null hypothesis: The mean life span today is not greater than 70 years. Alternative hypothesis: The mean life span today is greater than 70 years. Show more…
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A random sample of 100 recorded deaths in the United States during the past year showed an average life span of 71.8 years. Assuming a population standard deviation of 8.9 years, does this seem to indicate that the mean life span today is greater than 70 years? Use a 0.05 level of significance.
Maitreya E.
A random sample of 100 recorded deaths in the United States during the past year showed an average life span of 71.8 years. Assuming a population standard deviation of 8.9 years, does this seem to indicate that the average life span today is greater than 70 years? Use a 0.05 level of significance. Test the hypothesis H0: μ = 70 years H1: μ > 70 years
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Satpal S.
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