Systolic

for a

of

are

distributed with a mean of 122 and a standard deviation of 10. (

reading above 140 is considered to be high blood pressure.) Begin by converting the given blood pressure reading into a z-score. Then

use the accompanying table of z-scores and percentiles to find the percentage of people with blood pressure readings above 126.

Click the icon to view the table of z-scores and percentiles.

The 2-score is

(Type an integer or a decimal.)

The percentage of people with blood pressure readings above 126 is

(Round to two decimal places as needed.).

1: z-Scores and Percentiles

-Score

-4.0

-3.5

-3.0

-2.9

-2.8

-2.7

-26

-2.5

-2.4

-2.3

-2.2

-2.1

-2.0

-1.9

-1.8

-1.7

-1.6

-1.5

-1.4

z-Scores and Percentiles

Percentile -Score

0.003

0.02

0.13

0.19

0.26

0.35

0.47

0.62

0.82

1.07

1.39

1.79

2.28

2.87

3.59

4.46

5.48

6.68

8.08

9.68

11.51

-1.3

-1.2

-1.1 13.57

-1.0

-0.95

-0.90

-0.85

-0.50

-0.45

-0.40

-0.35

-0.80 21.19

-0.75

22.66

-0.70

-0.65

-0.60

-0.55

-0.30

-0.25

-0.20

Percentiler-Score

15.87

17.11

18.41

19.77

-0.05

0.0

24.20

25.78

27.43

29.12

30.85

32.64

34.46

36.32

38.21

40.13

42.07

-0.15

44.04

-0.10 46.02

48.01

50.00

0.0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.0

Percentilez-Score

50.00

51.99

53.98

55.96

57.93

59.87

61.79

63.68

65.54

67.36

69.15

70.88

72.57

74.22

75.80

77.34

78.81

80.23

81.59

82.89

84.13

11

12

1.3

1.4

1.5

1.6

1.7

18

1.9

2.0

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2,9

Percentile

86.43

88.49

90.32

91.92

93.32

94.52

95.54

3.0

3.5

4.0

96.41

97.13

97.72

98.21

98.61

98.93

99.18

99.38

99.53

99.65

99.74

99.81

99.87

99.98

99.997