Sherry missed the lesson on normal distribution and needs to do her homework. Explain to Sherry how to use the mean and standard deviation of a normal distribution to determine the top 7% of the population.

Question

amistre64 · Answer

this again?  does Sherry know how to find a zscore?

anonymous · Answer

but i never even asked you? before

amistre64 · Answer

the question has come up a few times and ive gone over it at length.  the key point being ... does the person who missed the lesson know how to determine a zscore?

amistre64 · Answer

you need 3 things to determine the cutoff value for the top 7%:  the mean, the standard deviation, and the zscore related to the percentage asked for