SOLUTION: 2. A Spanish examination includes 5 True or False questions. The probability of a student guessing the correct answer to the first question is 0.6. Likewise, the probability of a

Algebra ->  Probability-and-statistics -> SOLUTION: 2. A Spanish examination includes 5 True or False questions. The probability of a student guessing the correct answer to the first question is 0.6. Likewise, the probability of a      Log On


   

Question 1078252: 2. A Spanish examination includes 5 True or False questions. The probability of a student
guessing the correct answer to the first question is 0.6. Likewise, the probability of a student guessing correctly on each of the remaining question is 0.4

(a) State the probability distribution model that can be used along with
any assumptions
(b) What is the probability of a student
i. guessing NONE of the five questions correctly
ii. guessing at LEAST ONE of the five questions correctly

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A Spanish examination includes 5 True or False questions. The probability of a student guessing the correct answer to the first question is 0.6. Likewise, the probability of a student guessing correctly on each of the remaining question is 0.4
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Note:: The probability of ANY True/False question is 0.5, not 0.6 or 0.4.
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(a) State the probability distribution model that can be used along with
any assumptions
Binomial Distribution; p is constant ; events are independent
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(b) What is the probability of a student
i. guessing NONE of the five questions correctly:: 0.5^5
ii. guessing at LEAST ONE of the five questions correctly:: 1 - 0.5^5
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Cheers,
Stan H.
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