posted by please help in panic mode-mary on .
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
see the other post.
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.
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.