tutor
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For each of the given situations, write out the alternative hypothesis, being sure to state whether it is one-sided or two-sided. Complete parts a through c.
a) A consumer magazine discovered that 26% of a certain computer model had warranty problems over the first three months. From a random sample, the manufacturer wants to know if a new model has improved that rate.
b) The last time a philanthropic agency requested donations, 3.92% of people responded. From a recent pilot mailing, they wonder if that rate has increased.
c) A student wants to know if other students on her campus prefer soft drink brand A or soft drink brand B.
