Consumer Reports evaluated and rated 46 brands of toothpaste. One attribute examined in the study was whether or not a toothpaste brand carries an American Dental Association (ADA) seal verifying effective decay prevention. The data for the 46 brands (coded 1 = ADA seal, 0 = no ADA seal) are listed here.

a. Give the null and alternative hypotheses for testing whether the true proportion of toothpaste brands with the ADA seal verifying effective decay prevention is less than .5.
b. Locate the p-value on the Minitab printout below.
c. Make the appropriate conclusion using α = .10.

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1 1 0 1 1 1 1 Test and Ci for One Proportion ADAseal Test of p- 0.5 vE p< 0.5 Evant - 1 951 Upper Bounid -valae -0.88 F-Value 0.555007 -0. 0.188 aDAseal 20 44 0.43473 taing the normai approxination.