Direction: : In the following problem, (a) state the null and alternative hypothesis, (b)
select the test statistic and compute the test statistic value, (c) determine the critical
value and the rejection region, and (d) draw a conclusion

1.) A garment factory distributes two brands of jeans. If it is found that 75 out of 250 customers prefer brand A and that 30 out of 150 prefer brand B, can we conclude at 0.05 level of significance that brand A outsells brand B?


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