High-density lipoprotein (hdl) is sometimes called the "good cholesterol" because low values are associated with a higher risk of heart disease. according to the american heart association, people over the age of 20 years should have at least 40 mg/dl of hdl cholesterol. u. s. women aged 20 and over have a mean hdl of 55 mg/dl with a standard deviation of 15.5 mg/dl. assume that the distribution is normal.
what percentage of women have low values of hdl? (40mg/ dl or less)

(fill in the blank below and round your answer to a whole number.)

% of women have low values of hdl

17% of women have low values of HDL

Step-by-step explanation:

We need to calculate the z-score of low HDL level in the distribution.

z score can be calculated using the formula

z= where

Putting these numbers in the formula, we get

z= = -0.9677

By looking the z table P(Z<−0.9677) =0.1666

Then, in order to find the corresponding percentile we compute:

100×0.1666 = 16.66% ≈ 17%

answer:

step-by-step explanation:

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.