A recent study found that 51 children who watched a commercial for Walker Crisps (potato chips) featuring a long-standing sports celebrity endorser ate a
Suppose that the sample standard deviation for the children who watched the sports celebrity-endorsed Walker Crisps commercial was 21.4 grams and the sample standard deviation for the children who watched the alternative food snack commercial was 12.8 grams.
a. Assuming that the population variances are equal and
b. Assuming that the population variances are equal, construct a
c. Compare and discuss the results of (a) and (b).
d. Based on the results of (a) and (b), if you wanted to increase the consumption Walker Crisps, which commercial would you choose?
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Basic Business Statistics, Student Value Edition
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill