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Question 2. Look up the probabilities from the standard normal distribution table for the following z-scores:...

Question 2. Look up the probabilities from the standard normal distribution table for the following z-scores: a. z=1.96 b. z=2.33 c. z=2.58

Question 3. a. What is P(Z≤-2.53)? b. What is P(Z≥-2.53)?

Question 6. Let the random variable X denote scores on an exam. X~N72, 64. What is the lowest score that will be in the top 40 percent?

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