SOLUTION: mean=120, standard deviation= 9.75, N=1000 If five people are selected at random, calculate the probability that their mean blood pressure is between 130 and 136.

Question 872776: mean=120, standard deviation= 9.75, N=1000
If five people are selected at random, calculate the probability that their mean blood pressure is between 130 and 136.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
mean=120, standard deviation= 9.75, IF this is the Population SD...
N = 1000 , s = .975 for the 1000 group.
For 5 chosen at random
P(130 < xbar < 136)
P( t < 16/(.975/√5) - P(t < 10/(.975/√5)
Use DF = 4, t0 find p-value from chart or calculator
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