WHO IS CORRECT? LIAM or TEHYA?
2 answers:
Answer:
<h2>Liam is right.</h2>Step-by-step explanation:
The transformation that demonstrate the congruence between these two triangles is the given one by Liam:
can be reflected over the y-axis to create
You can get this answer by observing the given graph. You can realize that one triangle is a reflection of the other across y-axis, because when this happens, the x-coordinates are changed by their opposite. There you can see that
x = -7 is changed to x' = 7
x = -3 is changed to x' = 3
x = -2 is changed to x' = 2
Therefore, the right transformation is the reflection accross y-axis given by Liam, he's right.
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Answer: (17.42, 20.78)
Step-by-step explanation:
As per given , we have
Sample size : n= 9
years
Population standard deviation is not given , so it follows t-distribution.
Sample standard deviation : s= 1.5 years
Confidence level : 99% or 0.99
Significance level :
Degree of freedom : df= 8 (∵df =n-1)
Critical value :
The 99% confidence interval for the population mean would be :-
Hence, the 99% confidence interval for the population mean is (17.42, 20.78) .