The table below shows the scores on a science test. The number of standard deviations between a score and the mean score is indicated by a z-score. What was Cindy’s z-score on the science test?
a.
–2.2
c.
16
b.
100
d.
2.2

Which triangles area would be calculated using the trigonometric area formula

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.