44. Marketing. In November 2001, the Ag Globe Trotter newsletter reported that 90% of adults drink milk.

A regional farmers organization planning a new marketing campaign across its multicounty area polls a random sample of 750 adults living there. In this sample, 657 people said that they drink milk. Do these responses provide strong evidence that the 90% figure is not accurate for this region? Correct the mistakes you find in the following student’s attempt to test an appropriate hypothesis.

There is more than a 97% chance that the stated percentage is correct for this region.

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Ho: p = 0.9 HA: <0.9 SRS, 750 > 10 657 0.876; SD() (0.88)(0.12) = 0.012 750 750 0.876 -0.94 2 = -2 0.012 P = P(-2) = 0.977