mu = 1100 = population mean
sigma = 275 = population standard deviation
x = 1400 = raw score
z = z score
z = (x-mu)/sigma
z = (1400-1100)/(275)
z = 300/275
z = 1.0909090909091 approximately
z = 1.09
Convention is to round to two decimal places so that you can use a Z table to look up the area under the curve (which helps determine probability).
The positive z score is due to Paula's raw score being above the mean.
Answer:
0.15% decrease
Step-by-step explanation:
18.75 - 18.60 = 0.15
Hope this helped!
Answer:
$13.5
Step-by-step explanation:
Divide the total amount raised by how many students the money was divided among.
135/10=13.5
Answer:
6s⁹t³
Step-by-step explanation:
6s⁵t ₓ s⁴t² =
= 6ₓs⁵⁺⁴t¹⁺²
= 6s⁹t³
Answer:
50.2 square cm
Step-by-step explanation:
Diameter = 8 cm
Radius = 8/2 = 4 cm
