Answer:
0.000398142
or if rewriting the ratio is
0.04%
Answer:
60
Step-by-step explanation:
Let the original number be x.
According to the question we can write as (2/3)x+20x
On rearranging x−(2/3)x=20
Now taking the L.C.M od 1 and 3 is 3
(3x−2x)/3=20
x/3=20
Again by transposing x=60
So the original number is 60
Answer:
The answer is C) (7×4)+15
Answer:
.5% Of 360 is 1.8
Step-by-step explanation:
Answer:
We want to test the the claim that in general, 10% of students repeat a course and thats what we want to verify so then the system of hypothesis are:
Null hypothesis:
Alternative hypothesis
And the best option for this case is given:
d) H0:p=0.1 vs. H1:p 0.1
Step-by-step explanation:
For this case we have the folloing info:
number of people repeating the class
the sampel size selected
the estimated proportion of people repeating the class
We want to test the the claim that in general, 10% of students repeat a course and thats what we want to verify so then the system of hypothesis are:
Null hypothesis:
Alternative hypothesis
And the best option for this case is given:
d) H0:p=0.1 vs. H1:p 0.1 .