Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and a standard deviation of 12. a. What proportion of people have diastolic blood pres- sure less than 90

The probability that  people have diastolic blood pressure less than 90

P( X< 90) = 0.6628

Step-by-step explanation:

Explanation:-

Given mean of the Population 'μ'= 85

Given standard deviation of the Population 'σ'= 12

Let 'X' be the Normal distribution

let X = 90

The probability that  people have diastolic blood pressure less than 90

P( x < 90) = P( Z < 0.4166)

               = 1 - P( Z> 0.4166)

               = 1 -  (0.5 - A( 0.4166)

               = 0.5 + 0.1628

               = 0.6628

Conclusion:-

The probability that  people have diastolic blood pressure less than 90

P( X< 90) = 0.6628

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.