mean 80, standard dev 14: 80% of values above what value?
mean 80, standard dev 14: 80% of values above what value?
A normal distribution has a mean of 80 and a standard deviation of 14. Determine the value above which 80 percent of the values will occur.
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stapel_eliz
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What is the formula for converting the mean and the deviation to standard normals? (Look up the formulas they gave you in the boox.)A normal distribution has a mean of 80 and a standard deviation of 14. Determine the value above which 80 percent of the values will occur.
What is the z-score for the top 20% of values? (Look up the value on the z-score table.)
What value does this convert back to? (Use the formula they gave you.)