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Multiple Choice

Look up the value of p=.25, n=8 and r=6 in order to calculate the probability of 6 successes out of 8 trials.

1. What is the probability of exactly six out of eight businesses succeeding when the probability of success is.20?
a. 0.001
b. 0.01
c. 0.90

2. What is the probability of 0,1,2,3,4,5,6,7, and 8 businesses succeeding?
a. 0.168, 0.336, 0.294, 0.147, 0.046, 0.009, 0.001, 0.000, 0,000
b. 0.168, 0.336, 0.294, 0.000, 0.000
c. 0.147, 0.046, 0.009, 0.001, 0.000

3. What is the probability that at least five businesses make it?
a. 0.1
b. 0.01
c. 0.05

4. So, what's the probability that, at most, four businesses succeed?
a. 100%
b. 0.09
c. 0.991

5. If p is 20% and we have 10 independent trials (assume there are 10 new bakeries in town), what is the probability of all 10 bakeries succeeding?
a. 100%
b. 0.00
c. 0.50

6. What is the probability of 6 succeeding?
a. 0.05
b. 0.25
c. 0.006

7. What is the probability of at least 5 succeeding?
a. 0.00
b. 0.30
c. 0.033

8. What is the probability of none of them succeeding?
a. 0.701
b. 0.200
c. 0.107

9. Finally, what is the probability that only one will succeed?
a. 0.500
b. 0.268
c. 0.732

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