In a survey of 776 cigarette smokers, 43 of them reported that they have tried

hypnosis therapy to try to quit smoking. Can you conclude that less than

one-tenth of smokers have tried hypnosis therapy? Use the = 0.01 level of

significance.

i). State the appropriate null and alternate hypotheses.

ii). Compute the test statistic z.

iii). Using = 0.01 , can you conclude that less than one-tenth of smokers

have tried hypnosis therapy ?