# statistics and probability word problem

Anonymous
timer Asked: Dec 19th, 2017
account_balance_wallet \$20

Question description

I have statistics and probability homework due after 7 hours.

I need to get a good grade in this homework so i can pass the class.

screen_shot_2017_12_18_at_9.33.31_pm.png
screen_shot_2017_12_18_at_9.33.03_pm.png
screen_shot_2017_12_18_at_9.32.50_pm.png

siyuwang
School: Carnegie Mellon University

Hello buddy, check out question 25. I am awaiting Question 23 to complete question 24. Upload it asap

The formula will show in your excell sheet

PrQc P represents the fraction of students that pass the test who are unqualified.
PrQ Pc represents the fraction of students that fail the test who are qualified

a)

t1
t2
PrQc
0,25
0,25
PrPQ
0,9
0,85
PrPcQc
0,8
0,9
PrQcP
0,068966 0,037736
PrQPc
0,272727 0,333333
PrP
0,725
0,6625
To minimize chances of unqualified student admited pick least PrQcP = 0.0377 that is in Test 2
To minimize chances a qualified student is rejected pick least PrQPc = 0.2727 that is in Test 1

b)

t1
t2
PrQc
0,25
0,25
PrPQ
0,95
0,75
PrPcQc
0,85
0,88
PrQcP
0,05 0,050633
PrQPc
0,15 0,460123
PrP
0,75
0,5925
To minimize chances of unqualified student admited pick least PrQcP = 0.05that is in Test 1
To minimize chances a qualified student is rejected pick least PrQPc = 0.15 that is in Test 1

c)

t1
t2
PrQc
0,25
0,25
PrPQ
0,85
0,84
PrPcQc
0,8
0,9
PrQcP
0,072727 0,038168
PrQPc
0,36 0,347826
PrP
0,6875
0,655
To minimize chances of unqualified student admited...

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Anonymous
Totally impressed with results!! :-)

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