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kogti [31]
2 years ago
8

Assume the annual day care cost per child is normally distributed with a mean of ​$9000 and a standard deviation of ​$1000. What

percent of day care costs are more than ​$8600 ​annually?
Mathematics
1 answer:
Tpy6a [65]2 years ago
3 0

Answer:

65.54% (nearest hundredth)

Step-by-step explanation:

Given:

  • \sf \mu=9000
  • \sf \sigma=1000

\sf X \sim N(\mu, \sigma^2)\implies X \sim N(9000,1000^2)

P(X > 8600) = 1 - P(X ≤ 8600)

                    = 1 - 0.3445782584

                    = 0.6554217416

                    = 65.54%

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2 years ago
antwan is looking to get an apartment that cost $650 per month. How much does he need to make per year
vitfil [10]

Answer:

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If mZDEC = (12x - 3), mZBCE =
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Answer:

Step-by-step explanation:

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19x = 209

   x = 11

m∠DEC = 12(11) - 3 = 129°

m∠BCE = 7(11) - 26 = 51°

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m∠DBC = 57° corresponding angle to ADE

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Answer:

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