2. Distributions a. For the standard normal probability distribution, what percent of the curve lies to...

2. Distributions

a. For the standard normal probability distribution, what percent of the curve lies to the left of the mean?

b. Describe a normal distribution and a standard normal distribution.

c. You recently took a standardized test in which scores follow a normal distribution with a mean of 14 and a standard deviation of 5. You were told that your score is at the 75th percentile of this distribution. What is your score?

d. The random variable X is normally distributed with a mean of 14 and a standard deviation of 5. What is the probability that a value of X chosen at random will be between 7.5 and 18.5?

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orchestra answered 1 year ago

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