Answer:

Step-by-step explanation:
Using central Limit Theorem (CLT), The sum of 100 random variables;
is approximately normally distributed with
Y ~ N (100 ×
) = N ( 50,
)
The approximate probability that it will take this child over 55 seconds to complete spinning can be determined as follows;
N ( 50,
)




Using Chebyshev's inequality:

Let assume that X has a symmetric distribution:
Then:


where: (
)

3 sorry if it is wrong but have a good day
Answer:
can you be more specific of the question so i cam help you:)
Step-by-step explanation:
6x - 3y = 3 will be graph 1
4x - 2y = 8 will be graph 2