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: (
)

Roughly 24, but there's possibly like nine more. I got 24 without getting too confused
Answer:
We use letters to represent a variable in expressions. I hope this helps!
Step-by-step explanation:
Answer: He does not have enough money
The pants are initially $40
1/4 of this is $10
40-10 = 30 is the discount price
Mr Jacobs is short $5 (since 30-25 = 5)
Answer:
88.26 square yards
Step-by-step explanation:
Big rectangle: A = 4 x 12 = 48
Quarter circle: A = 1/4 x 3.14 x 6^2 = 28.26
Small rectangle: A = 2 x 6 = 12