3. Refer to the table below, the average number of chocolate chips per cookie in two competing products. Assume the population of the number of chocolate chips per cookie is normally distributed and...

Extracted text: 3. Refer to the table below, the average number of chocolate chips per cookie in two competing products. Assume the population of the number of chocolate chips per cookie is normally distributed and the population variances are equal. Brand A Sample mean Sample size Sample standard deviation Brand B 5.6 11 6.4 10 1.1 1.7 The makers of Brand A claim that their cookies average more chocolate chips than Brand B. Test this hypothesis at the a-05 level of significance.