Suppose that you randomly survey death records for people born in 1900 in Louisiana and compared the life span of two different ethnicities. Of the 109 individuals sampled from ethnicity 1, the mean life span was 45.5 years with a standard deviation of 18.2 years. Of the 105 individuals sampled from ethnicity 2, the mean life span was 44.9 years with a standard deviation of 11.4 years. Conduct a hypothesis test with a 10% level of significance to see if the mean life spans in Louisiana were the same for the two ethnicities. Step 1: State the null and alternative hypotheses. Ho: µ1 – µ2 = Ha:H1 – µ2 # v (So we will be performing a two-tailed test.)

Suppose that you randomly survey death records for people born in 1900 in Louisiana and compared the life span of two different ethnicities. Of the 109 individuals sampled from ethnicity 1, the mean life span was 45.5 years with a standard deviation of 18.2 years. Of the 105 individuals sampled from ethnicity 2, the mean life span was 44.9 years with a standard deviation of 11.4 years. Conduct a hypothesis test with a 10% level of significance to see if the mean life spans in Louisiana were the same for the two ethnicities. Step 1: State the null and alternative hypotheses. Ho: µ1 – µ2 = Ha:H1 – µ2 # v (So we will be performing a two-tailed test.)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

Suppose that you randomly survey death records for people born in 1900 in Louisiana and
compared the life span of two different ethnicities. Of the 109 individuals sampled from ethnicity 1,
the mean life span was 45.5 years with a standard deviation of 18.2 years. Of the 105 individuals
sampled from ethnicity 2, the mean life span was 44.9 years with a standard deviation of 11.4 years.
Conduct a hypothesis test with a 10% level of significance to see if the mean life spans in Louisiana
were the same for the two ethnicities.
Step 1: State the null and alternative hypotheses.
Ho: µ1 – µ2 =v
Ha:H1 – µ2 # v
(So we will be performing a two-tailed
♥ test.)

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