A Weight Loss Centre Provided a Loss for 72% of Its

question 39

Multiple Choice

A weight loss centre provided a loss for 72% of its participants.The centre's leader decides to test a new weight loss strategy on a random sample size of 140 and found weight loss in 78% of the participants.Test an appropriate hypothesis and state your conclusion.Be sure the appropriate assumptions and conditions are satisfied before you proceed.

• A) : p = 0.72; : p ≠ 0.72;z = 1.58;P-value = 0.1236.This data shows weak evidence of a weight loss in more than 72% of the participants in the weight loss strategy;the manager should not continue with this strategy.
• B) : p = 0.72; : p > 0.72;z = 1.58;P-value = 0.0571.This data shows moderate evidence of a weight loss in more than 72% of the participants in the weight loss strategy;it is hard to say whether or not they should use this strategy,perhaps further testing is in order.
• C) : p = 0.72; : p > 0.72;z = -1.58;P-value = 0.0618.This data shows weak evidence of a weight loss in more than 72% of the participants in the weight loss strategy;the manager should change strategies.
• D) : p = 0.72; : p < 0.72;z = -1.58;P-value = 0.9382.This data shows conclusive evidence of a weight loss in more than 72% of the participants in the weight loss strategy;the manager should continue with this strategy.
• E) : p = 0.72; : p < 0.72;z = 1.58;P-value = 0.9382.This data shows conclusive evidence of a weight loss in more than 72% of the participants in the weight loss strategy;the manager should continue with this strategy.

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