Null and Alternative Hypotheses

label Statistics
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1. We want to see if mean blood pressure is lower for people born in the South than for people born elsewhere.

2. We want to see if more than 90% of people on a diet program lose at least 10 pounds.
Oct 16th, 2017

Let musouth be the mean blood pressure for people in the south

Let muelsewhere be the mean blood pressure for people elsewhere

H0: musouth= muelsewhere

H0: musouth< muelsewhere

Or

H0: musouth≥ muelsewhere

H0: musouth< muelsewhere


Let p be the proportion of people on a diet program losing at least 10 pounds

H0: p =0.9

Ha: p >0.9

Or

H0: p ≤0.9

Ha: p >0.9


Oct 28th, 2014

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