Question

8. Normal blood pressure typically is defined as having systolic pressure < 120 and diastolic pressure <80. Among US residents age 40+, mean systolic pressure is 130 with a standard deviation of 35, and mean diastolic pressure is 80 with a standard deviation of 20. a) What is the probability that a US resident 40+ has high systolic blood pressure? b) What is the probability that a US resident 40+ does not have high diastolic blood pressure?

Answer 1

S-denotes spetalic pre denotesdiastolic pressune SsCune ven hat s ~N (M-130,635) S-130NN (O Z: S- 35 PCSAO s-12020-10 3S 35 P(27029 P(2s-019) - 1- o.3&59 - O614 (b) PCDS0 givan that DaN(M=y0, -20 D-&0 NNCO 2= D-M ao PLD S0= PCD-&0 8oto Thumas up

Answer 2

systolic blood pressure levels above 120 mm hg are considered to be high. for the 100 systolic blood pressure levels listed in the accompanying data set, the mean is 122.22000 mm hg and the standard deviation is 15.06322 mm hg. assume that a simple random sample has been selected. use a 0.01 significancd level to test the claim that sample is from a population with a mean greater than 120 mm hg.