Answer:
6.2
Step-by-step explanation:
because 1 2/3 times 3 1/3 is 6.2
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Answer:
Step-by-step explanation:
We can simplify y+2=1/2(x+2):
y+2=1/2(x+2)
y+2=(1/2)x+1
y=(1/2)x-1
See attached graph.
Given:
The ratio is:
1.5 kg : 350 g
To find:
The lowest or simplest form of the given ratio.
Solution:
We know that,
1 kg = 1000 g
We have,
1.5 kg : 350 g
It can be written as
Therefore, the lowest form of the given ratio is 30:7.
The test statistic for difference between two means is given by:
Thus, the appropriate test statistic is given by:
At 10% level of significance, the rejection region is given by
where:
for 10% level of significance is 1.65
Since z = 1.66 >
, we reject the null hypothesis, which means that <span>the traffic control strategy does not reduce carbon monoxide concentrations by at least 2 ppm.</span>