SOLUTION: A tire company makes the claim that at least 70% of its customers believed that their car performed better after installing its tires. A sample of 100 customers showed that 60% bel

Question 1162321: A tire company makes the claim that at least 70% of its customers believed that their car performed better after installing its tires. A sample of 100 customers showed that 60% believed that their car performed better. If the company’s claim is to be tested, state the null and alternative hypothesis.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Ho: p >=0.70
Ha: p <0.70
Want to test the hypothesis that the proportion is >=0.70
If rejected then proved that it is less than that proportion.
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