Choose a statement below. Write the null hypothesis (Ho) and the alternative hypothesis (Ha) in symbolic form. Identify which hypothesis is the claim. Then determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. You may also choose to comment on a classmate’s post.
1) A light bulb manufacturer claims that the mean life of a certain type of light bulb is more than 750 hours.
2) A consumer group claims that the mean annual consumption of coffee by a person in the United States is 23.2 gallons.
3) A report claims that 87% of lung cancer deaths are due to tobacco use.
4) A baseball team claims that the mean length of its games is less than 2.5 hours.
5) A resort claims that more than half of all customers return for another visit.
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