AT3P
17.10.2020 •
Mathematics
Triangle EFG is reflected across the y-axis on a coordinate plane and then dilated by scale factor of 3 centered at (0,0) to produce triangle KLM. What is true about triangle EFG and triangle KLM
Select all the true statements
-The triangles are neither similar nor congruent
- The triangles are similar and congruent
-The triangles are similar and congruent
-Triangle KLM has a smaller area
-Triangle KLM has a larger area
- The area of the triangles is the same
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Ответ:
The correct answer is option 'a' : 120 is more than 2.5 standard deviations above the expected value.
Step-by-step explanation:
For an exponential distribution we have
The expected value μ = 80
No of trails n = 200
Thus we have
The deviation is related to expected value and probability as
Thus the values between the given deviation is
Now since 120 successes are out of the range of [62.75,97.25] thus 120 is more than the expected value.