1. (20) A research specialist for a large seafood company investigated bacterial growth on oysters and...
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1. (20) A research specialist for a large seafood company investigated bacterial growth on oysters and mussels subjected to three different storage temperatures. Nine cold storage units were used. Three storage units were randomly selected to be used for each of the storage temperatures. Oysters and mussels were stored for two weeks in each of the cold storage units. The number of bacteria in each sample was observed. For the "seafood" variable, 1 means oysters and 2 means mussels. storage unit temperature seafood Count 40 1 2 2 6. 3 187 3 97 4 4 1333 151 11186 2841 1668 594 10 17751 10 25215 10 646 8 10 2 156 10 12635 10 2 61877 a. (5) The investigator could have had three replications for the study by simply taking three random samples of each type of seafood from a single cold storage unit set at one temperature. In this way, only three cold storage units would have been needed for the study, one for each temperature. Explain the potential difficulty with the study, if it had been conducted this way. b. (10) Suggest a model for this experiment c. (5) Confirm whether your model is adequate. If not, fix the problem. 1. (20) A research specialist for a large seafood company investigated bacterial growth on oysters and mussels subjected to three different storage temperatures. Nine cold storage units were used. Three storage units were randomly selected to be used for each of the storage temperatures. Oysters and mussels were stored for two weeks in each of the cold storage units. The number of bacteria in each sample was observed. For the "seafood" variable, 1 means oysters and 2 means mussels. storage unit temperature seafood Count 40 1 2 2 6. 3 187 3 97 4 4 1333 151 11186 2841 1668 594 10 17751 10 25215 10 646 8 10 2 156 10 12635 10 2 61877 a. (5) The investigator could have had three replications for the study by simply taking three random samples of each type of seafood from a single cold storage unit set at one temperature. In this way, only three cold storage units would have been needed for the study, one for each temperature. Explain the potential difficulty with the study, if it had been conducted this way. b. (10) Suggest a model for this experiment c. (5) Confirm whether your model is adequate. If not, fix the problem.
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Related Book For
An Introduction to Statistical Methods and Data Analysis
ISBN: 978-1305269477
7th edition
Authors: R. Lyman Ott, Micheal T. Longnecker
Posted Date:
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