For women aged 18-24, systolic blood pressures (in mm hg) are normally distributed with a mean of 114.8 and a standard deviation of 13.1. hypertension is commonly defined as a systolic blood pressure above 140. if 4 women in that age bracket are randomly selected, find the probability that their mean systolic blood pressure is greater than 140.

0.0001

Step-by-step explanation:

Given : For women aged 18-24, systolic blood pressures (in mm Hg) are normally distributed with a mean of 114.8 and a standard deviation of 13.1.

i.e.

Sample size =4

Let x be the sample mean systolic blood pressure.

Then the probability that their mean systolic blood pressure is greater than 140 will be

Hence, the required probability = 0.0001

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°

answer: no

step-by-step explanation: because the big angle will spread away the 2 side that it is on and make the opposite side even longer.