A Chemist Is Interested in Comparing Four Different Catalysts by Measuring

question 6

Multiple Choice

A chemist is interested in comparing four different catalysts by measuring reaction times.Each catalyst is tested five times,with each experiment randomly assigned one of the four catalysts.How many degrees of freedom does the treatment sum of squares have? How about the error sum of squares?

• A)df-treatment = 4; df-error = 16
• B)df-treatment = 3; df-error = 16
• C)df-treatment = 4; df-error = 19
• D)df-treatment = 3; df-error = 19
• E)df-treatment = 3; df-error = 17

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