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How effective is gastric bypass surgery in maintaining weight loss in extremely obese people? A study...

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Statistics

How effective is gastric bypass surgery in maintaining weightloss in extremely obese people? A study conducted found that 71% ofan SRS of 437 subjects who had received gastric bypass surgerymaintained at least a 20% weight loss six years after surgery.

1) Give a 90% confidence interval for the proportion of thosereceiving gastric bypass surgery that maintained at least a 20%weight loss six years after surgery. (Round your answers to fourdecimal places.)

Answer: _____ to _____

2) Interpret your interval in the context of the problem. (Roundyour answers to two decimal places.)

Answer: Based on this study, we estimate with 90% confidencethat between _____ % and _____ % of all gastric bypass patientswill maintain at least a 20% weight loss for six years aftersurgery.

Answer & Explanation Solved by verified expert
3.6 Ratings (675 Votes)
Solution Given that1 n 437Point estimate sample proportion 0711 1 071 029At 90    See Answer
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