A researcher claims that some particular bacteria with an average life span of 10 hours will live to be about 18 hours when 27% of environment is more suitable for a longer lifespan. Is there any reason to believe that the mean is less than 18 if 32 bacteria that are placed on this suitable environment have an average life of 14 hours with a standard deviation of 4.2 hours? Use a 0.05 level of significance.
A researcher claims that some particular bacteria with an average life span of 10 hours will live to be about 18 hours when 27% of environment is more suitable for a longer lifespan. Is there any reason to believe that the mean is less than 18 if 32 bacteria that are placed on this suitable environment have an average life of 14 hours with a standard deviation of 4.2 hours? Use a 0.05 level of significance.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:A researcher claims that some particular bacteria with an average life span of 10 hours
will live to be about 18 hours when 27% of environment is more suitable for a longer
lifespan. Is there any reason to believe that the mean is less than 18 if 32 bacteria that are
placed on this suitable environment have an average life of 14 hours with a standard
deviation of 4.2 hours? Use a 0.05 level of significance.
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