Answer:
slime
Step-by-step explanation:
The formula for the standard error is this:
σM = σ / √N
where
σM is the standard error
σ is the standard deviation
N is the number of samples
So,
σM = 0.45 / √50
σM = 0.0636 or 6.36%
The standard error is 0.0636
Answer:
x=1 and x= -2.5
Step-by-step explanation:
✯Hello✯
The quadratic formula is x=-b+-(sqrt)b^2-4ac/2a
A = 2
B= 3
C = -5
PLUG THESE VALUES INTO THE QUADRATIC FORMULA
we can see that x=1 and x= -2.5
❤Gianna❤
Answer:
There are 40 problems on the test
Step-by-step explanation:
Let p = the number of problems on the test
The number of problems on the test times the percent correct is the number correct
p * 85% = 34
p * .85 = 34
Divide each side by .85
p * .85/.85 = 34/.85
p = 40
There are 40 problems on the test
