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Oksi-84 [34.3K]
2 years ago
13

PLEASE HELP, WILL GIVE BRAINLIEST + 100 POINTS

Mathematics
1 answer:
attashe74 [19]2 years ago
3 0

Answer:

<em>part A.</em><em>equation of an ellipse</em>

<em>part B.</em><em>equation of a hyperbola</em>

<em>part C.</em><em>domain of each conic section</em>

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The number of responses to a survey are shown in the Pareto chart. The survey asked 1052 adults how they would grade the quality
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Answer: (a) P(no A) = 0.935

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Step-by-step explanation: <u>Pareto</u> <u>Chart</u> demonstrates a relationship between two quantities, in a way that a relative change in one results in a change in the other.

The Pareto chart below shows the number of people and which category they qualified each public school.

(a) The probability of a person not giving an A is the difference between total probability (1) and probability of giving an A:

P(no A) = 1-\frac{68}{1052}

P(no A) = 1 - 0.065

P(no A) = 0.935

b) Probability of a grade better than D, is the product of the probabilities of an A, an B and an C:

P(A and B and C) = (\frac{68}{1052})(\frac{258}{1052})(\frac{327}{1052})

P(A and B and C) = \frac{5736888}{1164252608}

P(A and B and C) = 0.0005

c) Probability of an D or an F is the sum of probabilities of an D and of an F:

P(D or F) = \frac{269}{1052} +\frac{130}{1052}

P(D or F) = \frac{399}{1052}

P(D or F) = 0.379

d) Probability of an A or B is also the sum of probabilities of an A and of an B:

P(A or B) = \frac{68}{1052} +\frac{258}{1052}

P(A or B) = \frac{326}{1052}

P(A or B) = 0.31

7 0
3 years ago
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