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State the appropriate null and alternative hypotheses, and an appropriate claim: A 2010 study reported that...

  1. State the appropriate null and alternative hypotheses, and an appropriate claim:
    1. A 2010 study reported that 88% of students owned a cell phone. You plan to take an SRS to see if the percentage has increased.
    2. The final exam in a large freshman chemistry class has a mean score of 75. The professor thinks that students who attend early-morning recitation sections will have a higher mean score than the class as a whole.
Math   Statistics-And-Probability   
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