Let the random variable Z follow a standard normal distribution. a) The probability is 0.80 that Z is less than what number? b) The probability is 0.35 that Z is less than what number? c) The probability is 0.3 that Z is greater than what number?
Added by James B.
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80. This is equivalent to finding the 80th percentile of the standard normal distribution. Using a standard normal distribution table or a calculator, we find that z ≈ 0.84. Show more…
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