A population of values has a normal distribution with μ
=
124.9
and
σ
=
45
. You intend to draw a random sample of 36 items from this population.

Find the probability that the mean of this sample is less than 105.4.

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

What is the result of adding the system of equations? 2x+y=4 3x-y=6