It was found that 85% of the students graduated from a technical university are employed within 6 months after graduation. A random sample of 20 graduated students were selected. If X the number of employed students, thus X ~ B(6,0.85) Select one: O True O False
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- It has been reported that 60% of the adult population participate in computer hobbies during their leisure time. A random sample of 300 adults found that 140 engaged in computer hobbies. α = 0.05. determine the alternative hypo, z-valueA marriage counselor has traditionally seen that the proportion p of all married couples for whom her communication program can prevent divorce is 79%. After making some recent changes, the marriage counselor now claims that her program can prevent divorce in mot e than 79% of married couples. In a random sample of 225 married couples who completed her program, 194 of them stayed together. is there enougn evidence to suppore che marriage counselor's claim at the 0.10 level of sionificance:A research center claims that at least 27% of U.S adults think that the IRS will adult their taxes. In a random sample of 1000 U.S adults in a recent year 23% say they are concerned that the IRS will adult their taxes. At x=0.01, is there enough evidence to reject the center's claim?
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