Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 04 Nov 2017 My Price 4.00

chemical compound

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Suppose that when the pH of a certain chemical compound is 5.00, the pH measured by a randomly selected beginning chemistry student is a random variable with mean 5.00 and standard deviation .2. A large batch of the compound is subdivided and a sample given to each student in a morning lab and each student in an afternoon lab. Let  = the average pH as determined by the morning students and Y= the average pH as determined by the afternoon students.

a. If pH is a normal variable and there are 25 students in each lab, compute P(-1 ≤  - Y ≤ .1).

b. If there are 36 students in each lab, but pH determinations are not assumed normal, calculate (approximately) P(-1 ≤  - Y ≤ .1).

 

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Maurice Tutor
(5)
Status NEW Posted 04 Nov 2017 05:11 PM My Price 4.00

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