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Alex73 [517]
3 years ago
10

(01.02 LC) Ben scored in the 85th percentile of his class on the latest math exam. What does this mean in relation to the data s

et, and what did he score on the exam? {35,42,56,68,69,72,72,77,78,78,82,85,87,88,90,93,94,96,96,99}
Mathematics
1 answer:
Vesnalui [34]3 years ago
7 0

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data on the result of math exam in Ben's class

{35,42,56,68,69,72,72,77,78,78,82,85,87,88,90,93,94,96,96,99}

The 85th percentile score represents the score in which 85 percent of the students in Ben's class or below obtained in the test.

The 85th percentile score :

85%(n+ 1) term

n = number of observations = 20

0.85(20 + 1)th term

0.85(21) = 17.85 term

Take the average of the 17th and 18th terms

(94 + 96) / 2

= 190 / 2

= 95

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The table you drew under the question is exactly the right way to start.

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A certain genetic condition affects 8% of the population in a city of 10,000. Suppose there is a test for the condition that has
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As, it is also given that, there is an error rate of 1% for condition (i.e., 1% false negatives and 1% false positives).

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5. Probability (as a percentage) that a person has the condition if he or she tests positive= As 8% are found positive among 10,000 means 9200 are not found affected.But there are chances that out of 9200 , 1% may be affected

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