Asked by please help in panic mode-mary

suppose you have a set of blood pressures with a mean of 80 diastolic, and standard deviation of 5 points. assuming a normal distribution of blood pressures what two values should 95% of all blood pressures lie? please show all calculations. thank you very much
Answered by bobpursley
see the other post.
Answered by please help in panic mode-mary
what other post, i don't know what you mean. can you show me the calculations? i have no idea where to begin and getting very frustrated. thank you very much.
mary
Answered by PsyDAG
Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the Z score = proportion of .475 from the mean. Insert Z value (one positive and one negative) and solve for your score values.
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