Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 17 Oct 2017 My Price 7.00

several petri dishes

The following table shows the number of bacteria colonies present in each of several petri dishes, after E. coli bacteria were added to the dishes and they were incubated for 24 hours. The “soap” dishes contained a

solution prepared from ordinary soap; the “control” dishes contained a solution of sterile water. (These data were seen in Exercise 6.6.9.)

Use a t test to investigate whether soap affects the number of bacteria colonies that form. Use . [Note:Formula (6.7.1) yields 10.4 degrees of freedom for these data.] a = 0.10 t

Exercise 6.6.9:

Some soap manufacturers sell special “antibacterial” soaps. However, one might expect ordinary soap to

also kill bacteria. To investigate this, a researcher prepared a solution from ordinary, nonantibiotic soap and a

control solution of sterile water. The two solutions were placed onto petri dishes and E. coli bacteria were added. The dishes were incubated for 24 hours and the number of bacteria colonies on each dish were counted.38 The data are given in the following table.

 

Compute the standard error of for these data.

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Maurice Tutor
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Status NEW Posted 17 Oct 2017 08:10 PM My Price 7.00

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