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3 years ago

A disk costs $3 more than a tape. Rolex bought five disks and two tapes. The total cost was $120. What was the price of a disk?

Mathematics

1 answer:

Nikitich [7]3 years ago

6 0

Each disk would have to be $18 each

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Soft drinks cost $1.89 and refills cost $0.25 each. With $3.80 to spend on the soft drink and refills, what is the maximum numbe

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The mean number of daily surgeries at a local hospital is 6.2. Assume that surgeries are random, independent events. (a) The cou

Scilla [17]

Answer:

a) correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

b) probability for only 2 or less than 2 surgeries in a given day is 0.0536

Step-by-step explanation:

Given data:

mean number is given as 6.2

correct option is

Poisson distribution is 6.2 and standard deviation is 2.49

we know that variance is given as $\sigma^2 = mean = 6.2$

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thus standard deviation is 2.49

correct option is

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