A proposed new method for the determination of sulfate in an industrial waste effluent is compared with an existing method, giving the following results below. Is there a significant difference between the precisions of the two methods? Show your solution. No. of No. of degrees of freedom Method Mean s (mg/dm) replicates Existing 72 7 3.38 New 72 8 7 1.50
A proposed new method for the determination of sulfate in an industrial waste effluent is compared with an existing method, giving the following results below. Is there a significant difference between the precisions of the two methods? Show your solution. No. of No. of degrees of freedom Method Mean s (mg/dm) replicates Existing 72 7 3.38 New 72 8 7 1.50
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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 proposed new method for the
determination of sulfate in an
industrial waste effluent is compared
with an existing method, giving the
following results below. Is there a
significant difference between the
precisions of the two methods? Show
your solution.
No. of
degrees of
freedom
No. of
Method
Mean
s (mg/dm?)
replicates
Existing
72
8
7
3.38
New
72
7
1.50
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