Assume That 20 People Participated in a Speed Reading Class

question 115

Multiple Choice

Assume that 20 people participated in a speed reading class for 6 months. Each person's speed of reading words per minute both before and after the program is determined and recorded. The following summarizes the results for the 20 people: Mean weight lost = 9 pounds Sample standard deviation of weight lost = 4.6 pounds Assume that the hypothesis test will be conducted to determine whether or not the weight loss program is effective using a 0.05 level of significance. What is the value of the test statistic?

• A) t = 18.634
• B) t = 1.96
• C) z = 1.96
• D) z = 6.19

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