Answer:
There is no enough evidence to claim that there is a difference between the two population proportions.
Step-by-step explanation:
We have to perform an hypothesis testing for a difference between two population proportions.
The null hypothesis will state that both proportions are the same, and the alternative hypothesis will state that they differ. This would be than a two-side hypothesis test.
We can write this as:
The significance level for this test is 0.05.
The sample of city residents with school-age children has a sample size n1=230 and a sample proportion p1=0.41
The sample of city residents without school-age children has a sample size n2=341 and a sample proportion p2=0.51
The weighted p, needed to calculate the standard error, is the weighted average of both sample proportions:
The standard error of the difference of proportions can now be calculated as:
The test statistic z is:
The P-value for this two side test and this value of the z-statistic is:
The P-value is bigger than the significance level, so the effect is not significant. The null hypothesis failed to be rejected.
There is no enough evidence to claim that there is a difference between the two population proportions.
Answer: answer down
Step-by-step explanation:
0.9 -15/30 -3 14/28
From the given figure,
the length of segment SP is 5 - 1 = 4,
the length of segment SR is 8 - 1 = 7,
the length of segment QR is 5 - 1 = 4,
the length of segment PQ is 8 - 1 = 7.
The length of segment MJ is 4 - 1 = 3,
the length of segment ML is 8 - 4 = 4
the length of segment KL is 4 - 1 = 3
the length of segment JK is 8 - 4 = 4
<span>segment SP to segment SR is 4 : 7
</span><span>segment MJ to segment ML is 3 : 4
</span>
<span>segment PQ to segment QR is 7 : 4
</span>segment JK to segment KL is 4 : 3
Because the ratio of any corresponding segments of the two rectangles to another segment is not equal, the two rectangles are not similar.
Therefore, the correct statement is "<span>The two tiles are not similar because segment PQ is to segment QR is 7:4 and segment JK is to segment KL is 4:3"</span>
Answer:
Step-by-step explanation:
y-4=-2(x-3)
y-4=-2x+6
making y the subject
y=-2x+6+4
y=-2x+10