Which is NOT a property of the standard normal distribution? symmetric about the mean
uniform
bell-shaped
unimodal

Through non-collinear points there is exactly one plane.

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)