Answer:
6758
Step-by-step explanation:
Number of steps in Monday = 8565 steps
Number of steps in Tuesday = 14707 steps
Number of steps in Wednesday = 15323 steps
Number of steps in Thursday = 9788 steps
Number of steps in Friday = 12482 steps
Formula for range = Highest value – Lowest value
Here, highest value = 15323 and lowest value = 8565
Range of the number of steps = 15323 – 8565 = 6758
Hence, range of the number of steps is 6758 steps.
7/4 * 301/2 (changed into mixed numbers)
2107/8
263.375
C
because when you change 3 into a mixed fraction its 263*8+3/8
263.375
#1
Answer:
Mean = 1.57
Variance=0.31
Step-by-step explanation:
To calculate the mean and the variance of the number of successful surgeries (X), we first have to enumerate the possible outcomes:
1) Both surgeries are successful (X=2).
2) Left knee unsuccessful and right knee successful (X=1).
3) Right knee unsuccessful and left knee successful (X=1).
4) Both surgeries are unsuccessful (X=0).
Then, the mean can be calculated as the expected value:
The variance can be calculated as:
Write and solve an equation of ratios:
$6,800 x
------------- = --------------
144 units 450 units
Then 144x = 3060000, or x = $21,250 (answer)
123
+111 = 234 easy peasy you're welcome)
