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In a standard normal distribution, find the following values: The probability that a given z score...

  1. In a standard normal distribution, find the following values:
    1. The probability that a given z score is less than -2.67
    2. The probability that a given z score is between 1.55 and 2.44
    3. The z scores that separates the most inner (middle) 82% of the distribution to the rest
    4. The z score that separate the lower 65 %  to the rest of the distribution
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Answer #1

1.
=NORMDIST(-2.67,0,1,TRUE)=0.003792562

2.
=NORMDIST(2.44,0,1,TRUE)-NORMDIST(1.55,0,1,TRUE)=0.053227127

3.
=NORMINV(0.09,0,1)=-1.340755034

1.34 and -1.34

4.
=NORMINV(0.65,0,1)=0.385320466

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