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Mila [183]
4 years ago
15

For an outdoor concert by the city​ orchestra, concert organizers estimate that 19 comma 000 people will attend if it is not rai

ning. If it is​ raining, concert organizers estimate that 4000 people will attend. On the day of the​ concert, meteorologists predict a 90​% chance of rain. Determine the expected number of people who will attend this concert.
Mathematics
1 answer:
My name is Ann [436]4 years ago
4 0
<h2>Answer:</h2><h2>The expected number of people who will attend this concert = 2260</h2>

Step-by-step explanation:

The concert organizers estimate people will attend if it is not raining = 19000

If its raining people will attend = 4000

On the day of the​ concert, meteorologists predict a 90​% chance of rain.

This means 10 % chance of not raining

The expected number of people = 90% (4000) + 10% (19000)

   = 360 + 1900

  = 2260

The expected number of people who will attend this concert = 2260

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Step-by-step explanation:

Given the data:

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Mean, xbar = Σx / n = 366200 /12 = 30516.67

Standard deviation, s = [√Σ(x - xbar) / n-1]

Using calculator, s = 3996.55

The ZSCORE = (x - mean) / s/√n

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Answer:

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Answer:

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3 years ago
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