20.022 b/c you have to round the 1 to a 2 b/c of the 5 behind the 1.
Hope that makes sense . (:
3 is the Anwser put number 3 in
Solve using PEMDAS:
24 - [(<u>10 - 7</u>) + (<u>16 - 9</u>)]
24 - [<u>(3) + (7)</u>]
<u>24 - (10)</u>
14
ANSWER: 14
Are you familiar with z-scores? According to the definition,
(given numerical value) - (mean)
z = ---------------------------------------------
standard deviation
Thus, with the given numerical value equal to 410 and the std. dev. equal to 75, the corresponding z-score is
410-500 -90
z = --------------------- = --------------- = -1.2
75 75
Use a table of z-scores to determine the area under the standard normal curve to the left of z = -1.2. Your result is the probability that a given family chosen at random spends less than $410 per month.