The dance teacher bought a roll of ribbon that is 201.5 yards. She needs 15.5 yards of ribbon for each dancer. How many 15.5 yar
1 answer:
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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: (
)
Answer:
Each dark chocolate tuffle was $6.
Step-by-step explanation:
This question can be solved by a system of equations.
Four white chocolate truffles (W) cost the same as three dark chocolate truffles (D).
So
The parent bought 3 white chocolate truffles(W) and 6 dark chocolate truffles (D), and spent $49.50.
So
Each dark chocolate tuffle was $6.