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Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 2.5 - Problem 7e
Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 2.5 - Problem 7e

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# The morality of a solute in solution is defined to be the ISBN: 9780073401331 38

## Solution for problem 7E Chapter 2.5

Statistics for Engineers and Scientists | 4th Edition

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Problem 7E

Problem 7E

The morality of a solute in solution is defined to be the number of moles of solute per liter of solution (1 mole = 6.02 × 10 23 molecules). If X is the morality of a solution of magnesium chloride (MgCl2), and Y is the morality of a solution of ferric chloride (FeCl3), the morality of chloride ion (Cl- ) in a solution made of equal parts of the solutions of MgCl2 and FeCl3 is given by M = X + 1.5Y. Assume that X has mean 0.125 and standard deviation 0.05, and that Y has mean 0.350 and standard deviation 0.10.

a. Find μM

b. Assuming X and Y to be independent, find σM.

Step-by-Step Solution:

Solution:

Step 1 of 3:

The morality of a solute in solution is defined to be the number of moles of solute per litre of solution. Let X be the mortality of a solution  of MgC .and Y is the morality of a solution of FeC . The morality of chloride in a solution made of equal parts of solutions of MgC and FeC is M= X+ 1.5Y. Here X has mean 0.125 and standard deviation 0.05, and Y has mean

0.350 and standard deviation 0.10.

We have to find

1. E(X)
2. when X and Y are independent.

Step 2 of 3

Step 3 of 3

##### ISBN: 9780073401331

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