Suppose all people can be classified as either left-handed or right-handed. According to the current data, 80% are right-handed and that 50% of them are male. Of those who are left-handed, 60% are male.  - What proportion of people are left-handed? a) 20% b) 40% c) 80%  - What percentage  of the whole population are female and right-handed?  a) 0.8x(1-0.5) b) 0.6x(1-0.5) c) (1-0.8)x(1-0.6) - What percentage  of the whole population are female and left-handed? a) (0.8)x(1-0.5)+(1-0.8)x(1-0.6) b) (0.8)x(0.5)+(1-0.8)x(0.6) c) (1-0.8)x(0.6) d) (1-0.8)x(1-0.6)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Suppose all people can be classified as either left-handed or right-handed. According to the current data, 80% are right-handed and that 50% of them are male. Of those who are left-handed, 60% are male. 

- What proportion of people are left-handed?

a) 20%

b) 40%

c) 80%

 - What percentage  of the whole population are female and right-handed? 

a) 0.8x(1-0.5)

b) 0.6x(1-0.5)

c) (1-0.8)x(1-0.6)

- What percentage  of the whole population are female and left-handed?

a) (0.8)x(1-0.5)+(1-0.8)x(1-0.6)

b) (0.8)x(0.5)+(1-0.8)x(0.6)

c) (1-0.8)x(0.6)

d) (1-0.8)x(1-0.6)

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