Amedical researcher is interested in determining if there is a relationship between adults over 50 who walk regularly and low, moderate, and high blood pressure. a random sample of 236 adults over 50 is selected and the results are given below:

70.8, 27.1, 66.2, 20.8
find the expected frequency e2,2 to test the claim that walking and low, moderate, and high blood pressure are not related.

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

(01.04 lc)multiply 1 over 6 multiplied by negative 1 over 2. negative 1 over 3 negative 1 over 12 1 over 12 1 over 3

What is the sum of these mixed numbers 4 2/3+ 3 1/9