Answer:
y=-1/2x+2
Step-by-step explanation:
2x+4y=8
4y=8-2x
y=-2x+8
y=-2/4x+8/4
y=-1/2x+2
Answer:
0.3137 ; 0.2228
Step-by-step explanation:
Given a normal distribution :
Morning class :
Mean(Mm) = 71%
Standard deviation (Sm) = 12%
Afternoon class:
Mean(Ma) = 78%
Standard deviation (Sa) = 8%
M = Mm - Ma = (71 - 78) = - m7
S = √Sm + Sa = √12² + 8² = √208
A. What is the probability that a randomly selected student in the morning class has a higher final exam mark than a randomly selected student from an afternoon class?
P(morning > afternoon) = p(morning - afternoon > 0)
Using:
Z = (0 - (-7)) / S
Z = 7 / √208
Z = 0.4853628
P(Z > 0.49) = 0.3137
B)
What is the probability that the mean mark of four randomly selected students from a morning class is greater than the average mark of four randomly selected students from an afternoon class?
Using:
Z = (4 - (-7)) / S
Z = 11 / √208
Z = 0.7627127
P(Z > 0.49) = 0.2228
Answer:
False, True, True, False, False
The answer is 262 and I hope you have a nice week yours ac80922
Two ways are...
1. 208,561
2. write it out as two hundred eight thousand five hundred sixty-one
#. you can also write it as 200,000 + 8,000 + 500 + 60 + 1
