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AlekseyPX
3 years ago
9

you are playing a game of scrabble and have 5 a tiles 3e tiles 1 z tile 2 m tiles 3 l tiles, and 1 y tile to choose from, what i

s the probability that you choose e or y on your next draw?
Mathematics
2 answers:
zzz [600]3 years ago
3 0
Since we want either an e tile OR a y tile, then they are not simultaneous. Thus, we add up the probabilities to form our final probability.

The total number of possibilities is: 5 + 3 + 1 + 2 + 3 + 1 = 15, because there are 15 tiles to choose from.

Now, P(e tile) = 3/15 = 1/5
P(y tile) = 1/15

When we add them up, we get: P(e tile or y tile): 3/15 + 1/15 = 4/15
Thus, we have a 4/15 in choosing an E or a Y tile on the next draw.
Hitman42 [59]3 years ago
3 0

There is a 1/3 chance (hope that also helps).

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Situation D: Suppose that, in a one-minute period during an electrical storm, the number of lightning strikes on a radar antenna
Crank

Answer:

21.77% probability that the antenna will be struck exactly once during this time period.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

In this question:

\mu = 2.40

Find the probability that the antenna will be struck exactly once during this time period.

This is P(X = 1).

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 1) = \frac{e^{-2.40}*2.40^{1}}{(1)!} = 0.2177

21.77% probability that the antenna will be struck exactly once during this time period.

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2 years ago
The cost of a banquet can be calculated using the function
kotykmax [81]

Answer:

3 people attended the banquet

Step-by-step explanation:

The function is given as:

b = 75 + 15n where

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n represents the number of people attending = ??

If the total cost of the banquet is 122, how many people attended the banquet?

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122 = 75 + 15n

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Divide both sides by 15

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Approximately to the nearest whole number = 3

Therefore, 3 people attended the banquet.

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3 years ago
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