17. If one randomly picks two different months from the Tornado data list. What is the...
17. If one randomly picks two different months from the Tornado data list. What is the probability that they both are Summer months (June, July, August).
- a. 1/12
- b. 2/12
- c. 3/66
18. If one randomly picks two different months from the Tornado data list. What is the probability that their Correlation will be above 0.5. Hint: Check the correlation table.
- a. 2/66
- b. 2/33
- c. 1/18
19. If a person rolls two dice, what is the probability that the sum of the numbers is equal to 7?
- a. 1/18
- b. 1/6
- c. 1/36
20. If a person tosses three coins what is the probability that he will not have any Heads?
- a. 1/8
- b. 2/8
- c. 1/2
Homework Answers
17) total possible outcomes = 12c2 = 66
Pairs of summer months possible = 3
Required probability = 3/66
Option (c)
19) possible ways to get the sum of 7 = (1,6) (6,1) (2,5) (5,2) (3,4) (4,3) = 6 possible outcomes
Total possible outcomes when a pair of dice rolled = 36
Required probability = 6/36) = 1/6
Option (b)
20) possible outcomes = HHH, TTT, TTH, HTT, HHT, THH, THT, HTH. = 8 possible outcomes
Their's only 1 outcome which don't has any H and that is TTT = 1 outcome
Required probability = 1/8
Option (a)
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