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At a certain hospital, 75% of the interns receive

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At a certain hospital, 75% of the interns receive fewer than 6 hours of sleep and report feeling tired during their shifts. At the same time, 70% of the interns who receive 6 or more hours of sleep report no feelings of tiredness. If 80% of the interns receive fewer than 6 hours of sleep, what percent of the interns report no feelings of tiredness during their shifts?

14 
19 

20
81

Official Answer

1 Best Answer

Navin Barathwaj
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Best answer
75% of interns - less than 6 hrs sleep and report tiredness
80% of interns - less than 6 hrs sleep
20% of interns - more than 6 hrs sleep
70% of 20% = 14% of interns - more than 6 hrs sleep and no tiredness
80%-75% = 5% of interns - less than 6 hrs sleep and no tiredness
interns with no tiredness = 14% + 5% = 19%
answered Oct 4, 2015 by Partner (663 points)
selected Nov 2, 2015 by
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