SOLUTION: The mean life satisfaction for 142 countries around the world in 2016 (on a scale from 0 - 10) was 5.4. A sample of 46 countries taken in 2018 showed a mean of 5.6 with a standar
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Question 1179167: The mean life satisfaction for 142 countries around the world in 2016 (on a scale from 0 - 10) was 5.4. A sample of 46 countries taken in 2018 showed a mean of 5.6 with a standard deviation of 1.1. Is the mean life satisfaction for the 2018 sample significantly higher than the mean life satisfaction in 2016? Conduct the appropriate hypothesis test using α = 0.01.
What is the standard deviation?
please show steps!
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
Significance level = 0.01
Test statistic: with 45 d.f.
==> p-value = 0.112 > 0.01 = .
Therefore, do not reject the null hypothesis, and conclude that the mean life satisfaction for 2018 is not significantly higher than in 2016.
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