Answer:
Step-by-step explanation:
We can tell this is a linear relation.
The slope is (50-30)/(8-6)=10.
So we have y=10x+b.
We can substitute in (5, 10) to get 10=10(5)+b -> b=-40
meaning y=10x-40
X=12 because 73-3x=61-2x so add 3x to both to make 73=61+X then subtract 61 from both to get 12=X
Answer:
275 miles
Step-by-step explanation:
Let x be the number of miles Alan has to drive to get the same cost for tha two plans.
1 plan: total cost
2 plan: total cost
Equate them:
Move 4 to the left of f :
4f
Answer:
C with 3000 successes of 5000 cases
Step-by-step explanation:
In test statistics the number of samples goes a long way in determining the result of a test.
Using the z score formula
Test statistic z score can be calculated with the formula below;
z = (p^−po)/√{po(1−po)/n}
Where,
z= Test statistics
n = Sample size
po = Null hypothesized value
p^ = Observed proportion
Therefore the z score is directly proportional to the square root of the sample size.
z ∝ √n
The higher the sample size, the higher the z score, the higher the evidence of confirming the alternative hypothesis.
Since the all have the same proportion (0.6), and options c has the highest sample size (5000 cases), it will give the strongest evidence for the alternative hypothesis
