A group of scientists studied the adhesion of various biofilms to solid surfaces for possible use in environmental technologies. Adhesion assay is conducted by measuring absorbance at A590. If the scientists want the confidence interval to be no wider than 0.55 dyne-cm2 at 98% confidence interval, how many observations should they take? Assume that the standard deviation is known to be 0.66 dyne-cm?.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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A group of scientists studied the adhesion of various biofilms to solid surfaces for possible use in environmental technologies. Adhesion assay is conducted by measuring
absorbance at A590. If the scientists want the confidence interval to be no wider than 0.55 dyne-cm2 at 98% confidence interval, how many observations should they take?
Assume that the standard deviation is known to be 0.66 dyne-cm?.
O 32
O 16
O 39
21
O 18
O 25
Transcribed Image Text:A group of scientists studied the adhesion of various biofilms to solid surfaces for possible use in environmental technologies. Adhesion assay is conducted by measuring absorbance at A590. If the scientists want the confidence interval to be no wider than 0.55 dyne-cm2 at 98% confidence interval, how many observations should they take? Assume that the standard deviation is known to be 0.66 dyne-cm?. O 32 O 16 O 39 21 O 18 O 25
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