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Posted by on Wednesday, March 20, 2013 at 8:36pm.

What is the probability of randomly selecting a z-score less than z = 0.80 from a normal distribution?
a)-0.2119
b)0.7881
c)0.2119
d)-0.7881

  • STAT 250..Help! - , Thursday, March 21, 2013 at 1:14pm

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to your Z score.

    Hint: probability can only be positive.

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