Question

True or False: If one score is randomly selected from a normal distribution with μ=100 and σ=20, the probability of obtaining a score between X=80 and X=120 is p=0.3413. 2. True or False: When the z-score value in a normal distribution is negative, the majority of the area is on the left-hand side of the distribution. 3. A multiple-choice test has 48 questions with four choices for each question. What is the probability of getting more than 12 questions correct by guessing? 4. For a binomial distribution with p=q=1/2 and n=36, what is the mean for the normal approximation? 5. A normal distribution with a mean of μ=70 and σ=12. If one score is randomly selected from this distribution, what is the probability that the score will be greater than x=58?

          True or False: If one score is randomly selected from a normal distribution with μ=100 and σ=20, the probability of obtaining a score between X=80 and X=120 is p=0.3413.

2. True or False: When the z-score value in a normal distribution is negative, the majority of the area is on the left-hand side of the distribution.

3. A multiple-choice test has 48 questions with four choices for each question. What is the probability of getting more than 12 questions correct by guessing?

4. For a binomial distribution with p=q=1/2 and n=36, what is the mean for the normal approximation?

5. A normal distribution with a mean of μ=70 and σ=12. If one score is randomly selected from this distribution, what is the probability that the score will be greater than x=58?

Added by William J.

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