An Advertisement for a Popular Weight-Loss Clinic Suggests That Participants

question 8

Multiple Choice

An advertisement for a popular weight-loss clinic suggests that participants in its new diet program lose, on average, more than 10 pounds. A consumer activist decides to test the authenticity of the claim. She follows the progress of 18 women who recently joined the weight-reduction program. She calculates the mean weight loss of these participants as 10.8 pounds with a standard deviation of 2.4 pounds. The test statistic for this hypothesis would be ________.

• A) 1.41
• B) −1.41
• C) 1.74
• D) −1.74