A weight loss centre provided a loss for 72% of its participants.The centre's leader decides to test a new weight loss strategy.Identify the Type I error in this context.

A) The centre sampled all participants at the weight loss centre.
B) The centre concludes that the proportion of participants losing weight is increasing,but in fact the new strategy does not help weight loss.
C) The product of the centre's sample size and sample proportion was less than 10.
D) The centre concludes that proportion of weight loss is increasing since the weight loss level can only increase.
E) The centre stops the new strategy,but in fact weight loss is increasing and the strategy helps.

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Zachary Stone · Accepted Answer

Final Answer : B, Explanation :  The Type I error in this context would be if the centre concludes that the new weight loss strategy is effective at increasing the proportion of participants who lose weight, when in reality it does not help with weight loss. This is a Type I error because it would be a false positive, meaning the centre would falsely conclude that the new strategy is effective when it is not. Option B describes this scenario, making it the correct choice. The other options either do not relate to Type I error or are incorrect explanations of the situation.

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