The heart rate variability​ (HRV) of police officers was the subject of research published in a biology journal. HRV is defined as the variation in the time intervals between heartbeats. A measure of HRV was obtained for each in a sample of 368 police officers from the same city.​ (The lower the measure of​ HRV, the more susceptible the officer is to cardiovascular​ disease.) For the 76 officers diagnosed with​ hypertension, a 90​% confidence interval for the mean HRV was ​(454.5​,129.6​). For the 292 officers that are not​ hypertensive, a 90​% confidence interval for the mean HRV was ​(153.9,195.5​). Use this information to complete below parts.
a. What confidence coefficient was used to generate the confidence intervals?
b. Give a practical interpretation of both of the 99% confidence intervals. Use the phrase "99% confident" in your answer.

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

x = 17

step-by-step explanation:

in the given figure, two triangles are inscribed in a circle where ∠bae ≅ ∠dae which makes the side be and de equal so we can write it as:

3x - 24 = x + 10

solving this equation for x to get:

3x - x = 10 + 24

2x = 34

x = 34/2

x = 17

therefore, the value of x = 17.

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.