▼ Part 1 of 2 Suppose that you randomly survey death records for people born in 1900 in Virginia and compared the life span of two different ethnicities. Of the 132 individuals sampled from ethnicity 1, the mean life span was 58.5 years with a standard deviation of 16.9 years. Of the 191 individuals sampled from ethnicity 2, the mean life span was 54.3 years with a standard deviation of 10.3 years. Conduct a hypothesis test with a 7% level of significance to see if the mean life spans in Virginia were the same for the two ethnicities. Step 1: State the null and alternative hypotheses. Ho: 1-2 = V 0 Ha: 1₂0 (So we will be performing a two-tailed Part 2 of 4 Step 2: Assuming the null hypothesis is true, determine the features of the distribution of the differences of sample means. ✓✓test.) The differences of sample means are t-distributed and distribution standard deviation Question Help: Post to forum Submit Part with distribution mean

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Part 1 of 4
Suppose that you randomly survey death records for people born in 1900 in Virginia and compared
the life span of two different ethnicities. Of the 132 individuals sampled from ethnicity 1, the mean
life span was 58.5 years with a standard deviation of 16.9 years. Of the 191 individuals sampled
from ethnicity 2, the mean life span was 54.3 years with a standard deviation of 10.3 years. Conduct
a hypothesis test with a 7% level of significance to see if the mean life spans in Virginia were the
same for the two ethnicities.
Step 1: State the null and alternative hypotheses.
Ho: 12V✓0
Ha: 1₂V0
(So we will be performing a two-tailed
Part 2 of 4
Step 2: Assuming the null hypothesis is true, determine the features of the distribution of the
differences of sample means.
The differences of sample means are t-distributed
and distribution standard deviation
Question Help: Post to forum
C
Submit Part
test.)
06
✓✓with distribution mean
MacBook Pro
Search or type URL
...........
Transcribed Image Text:Part 1 of 4 Suppose that you randomly survey death records for people born in 1900 in Virginia and compared the life span of two different ethnicities. Of the 132 individuals sampled from ethnicity 1, the mean life span was 58.5 years with a standard deviation of 16.9 years. Of the 191 individuals sampled from ethnicity 2, the mean life span was 54.3 years with a standard deviation of 10.3 years. Conduct a hypothesis test with a 7% level of significance to see if the mean life spans in Virginia were the same for the two ethnicities. Step 1: State the null and alternative hypotheses. Ho: 12V✓0 Ha: 1₂V0 (So we will be performing a two-tailed Part 2 of 4 Step 2: Assuming the null hypothesis is true, determine the features of the distribution of the differences of sample means. The differences of sample means are t-distributed and distribution standard deviation Question Help: Post to forum C Submit Part test.) 06 ✓✓with distribution mean MacBook Pro Search or type URL ...........
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