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Title: A group of biologists wish to study the life span of the common housefly. They want to estimate the ... Post by: apple321 on Feb 19, 2023 A group of biologists wish to study the life span of the common housefly. They want to estimate the mean life span with 80% confidence and a width on the interval of estimation no greater than 1 hr. How many samples should they draw if a previous study indicates that the standard deviation of life span is 2.43 hr? ▸ 10 ▸ 39 ▸ 230 ▸ 9 Title: Re: A group of biologists wish to study the life span of the common housefly. They want to estimate the ... Post by: yoliness on Feb 19, 2023 Content hidden
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