The Z-score is based on the concept of the normal distribution, the fact that we can expect 95% of the values in the distribution to be between 2 standard deviations below the average and 2 standard deviations above the average. Say the average weight of a 4 year old girl is 15 kilograms and the standard deviation is 3 kilograms. What is true of the following weights:
12 kilograms
a) maybe not healthy
b) definitely not healthy
c) in perfect health
d) We can say nothing based on this

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α.part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part bsuppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i. e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part cnow try a numerical problem. what is the direction of the vector w = < -1, 6 > ?