SOLUTION: questions (1) If the probability of an event NOT happening is 0.06 what is the probability of it happening? (2)Evaluate 10C3? (3)if a teacher grades distribution is over 3 y

Question 980377: questions
(1) If the probability of an event NOT happening is 0.06 what is the probability of it happening?
(2)Evaluate 10C3?
(3)if a teacher grades distribution is over 3 years what are empirical probability for some to get A,C,D when A=39, C=258, and D=124?
(4)If there are 984 flower which 632 are white and 352 are purple what is the probability that you will pick a white flower?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
The probabilities have to add to 1
If one is 0.06, the other has to be (1-0.06)=0.94
10C3=
10!/7!3!
10*9*8*7!/7!*3*2*1
The 7! cancel
10*9*8/3*2*1
720/6=120
=======
Three are 421 outcomes
A=39/421 =0.0926
C=258/421=0.6128
D=124/421=0.2945
That adds up to 0.9999.
======
632/(632+352)
632/984
0.6423

RELATED QUESTIONS
if the probability of an event is .46, what is the probability of the... (answered by ewatrrr)

The odds against an event are 49 to 2. What is the probability of the... (answered by AnlytcPhil,Edwin McCravy)

If the probability of an event is 0.857, what is the probability that the event will not... (answered by edjones)

If the probability of an event is 0.857, what is the probability that the event will not... (answered by stanbon)

if odds against an event occurring are 2:7,what is the probability of the event... (answered by Fombitz)

I'm totally lost with the probability and statistics, I have 2 discussions questions and... (answered by stanbon)

Explain in your own words, using the definition of probability why: a) the probability of (answered by jim_thompson5910)

Which of the following statements about the event E is not true? If an event E... (answered by Fombitz,Edwin McCravy)

If the rapture of the church is an imminent event, what is the probability that it could... (answered by ikleyn)

If the probablility of an event is .857, what is the probability that the event will not... (answered by stanbon)