Answer:
We conclude that there is enough evidence to claim that the van has a 31.3 miles/gallon (MPG) rating.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 31.3 miles/gallon
Sample mean, = 31.1
Sample size, n = 140
Alpha, α = 0.02
Population standard deviation, σ = 1.3
First, we design the null and the alternate hypothesis
We use Two-tailed z test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
The calculated z-statistic lies in the acceptance region, we fail to reject the null hypothesis and accept it.
We conclude that there is enough evidence to claim that the van has a 31.3 miles/gallon (MPG) rating.
A) definition of bisector
Answer:
C) exponential function going through point 0, negative four and ending down on the right
Step-by-step explanation:
The given function is
When ,
The graph passes through .
The negative factor will cause the graph to be reflected in the x-axis.
Therefore the graph will end down on the right.
The correct choice is C
Solving we get
Step-by-step explanation:
We need to solve the problem:
Solving:
Add 9/4 on both sides:
So, Solving we get
Keywords: Solving Fractions
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Answer:
15
Step-by-step explanation:well, if 8x^8 goes north, and 5 miles south the answer would be 15 because 8x^8 N and 5 miles S using the phemols, it would be 15.