A company claims that 80% of its customers are under 30. You suspect it is less than this. You take a random sample of 200 customers to test this and find out that 75% of your sample are under 30. What is the alternative hypothesis here?   a. The proportion of customers under 30 is less than 75%     b. The proportion of customers under 30 is less than 80%      c. The proportion of customers under 30 is equal to 75%

MATLAB: An Introduction with Applications
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  1. A company claims that 80% of its customers are under 30. You suspect it is less than this. You take a random sample of 200 customers to test this and find out that 75% of your sample are under 30. What is the alternative hypothesis here?

      a.

    The proportion of customers under 30 is less than 75%

        b.

    The proportion of customers under 30 is less than 80% 

        c.

    The proportion of customers under 30 is equal to 75%

     
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