Weekly wages at a certain factory are normally distributed with a mean of
$400 and a
standard deviation of $50.
Find the probability that a worker
selected at random makes between
$400 and $450.

Sera sells t-shirts at the beach. she believes the price of a t-shirt and the number of t-shirts sold are related. she has been experimenting with different prices for the t-shirts. she has collected a data set with five pairs of data; each consists of the price of a t-shirt and the number of shirts sold. the independent variable, which will go on the x-axis, is . the dependent variable, which will go on the y-axis, is the