Which statement can be made about a line in slope-intercept form when the graph of the line appears to slant downward from left
to right?
2 answers:
Answer with explanation:
The equation of line in Slope intercept form is:
⇒ y= m x +C
y= x tan (Angle made by line with positive Direction of X axis) +C(Y-Intercept)
It is given that, graph of the line appears to slant downward from left to right.
⇒It means ,the angle that the line is making with X axis should be:
90°<Angle<180°
as i have drawn the line about the given information.
⇒Tan (90°< Angle <180°)= Negative
So, we can say that slope of line will be Negative.
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Answer:
With the most common significance levels used we see that the p value is lower than the significance level so then we have enough evidence to reject the null hypothesis and we can say that the true proportion is significantly higher than 0.5
Step-by-step explanation:
Information given
n=297 represent the random sample of male taken
X=183 represent the men who said yes, they had driven a car when they probably had too much alcohol
estimated proportion of men who said yes, they had driven a car when they probably had too much alcohol
is the value that we want to test
z would represent the statistic (variable of interest)
represent the p value (variable of interest)
Hypothesis to test
We need to conduct a hypothesis in order to test the claim that the majority of men in the population (that is, more than half) would say that they had driven a car when they probably had too much alcohol, and the system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
The statistic is given by:
(1)
After replace we got:
Since we have all the info requires we can replace in formula (1) like this:
Decision
We have a right tailed test so then the p value would be:
With the most common significance levels used we see that the p value is lower than the significance level so then we have enough evidence to reject the null hypothesis and we can say that the true proportion is significantly higher than 0.5