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In: Statistics and Probability

Construct a 95% confidence interval for u1 - u2 using the data presented in the table...

Construct a 95% confidence interval for u1 - u2 using the data presented in the table below:

Flight Control
8.59 8.64 7.43 7.21 8.65 6.99 8.40 9.66
6.87 7.89 9.29 6.85 7.62 7.44 8.55 8.70
7.00 8.80 9.30 8.03 7.33 8.58 9.88 9.94
6.39 7.54 7.14 9.14

Let Ho be the null hypothesis that the vote is independent of age (that is there is no age gap in the vote). Test the null hypothesis at the x=0.10 significance level.

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