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Yuliya22 [10]
3 years ago
7

Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.

Jason decides to test the land for oil. He buys a kit that claims to have an 80% accuracy rate of indicating oil in the soil. What is the probability that the land has oil and the test predicts it? Show solution.
Mathematics
1 answer:
inn [45]3 years ago
7 0
P ( A ) = 0.45  - probability that the land has oil,
P ( B ) = 0.8   - probability that the test predicts it
P ( A ∩ B ) = P ( A ) · P ( B ) = 0.45 · 0.8  = 0.36
Answer: The probability that the land has oil and the test predicts it is 36 %. 
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It should be noted that the z score for Thomas test grade is 0.237.

<h3>How to illustrate the information?</h3>

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Therefore, the z score for Thomas test grade will be:

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Therefore, it should be noted that the z score for Thomas test grade is 0.237.

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brainly.com/question/12402189

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Thomas and Pablo began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Thomas took a test in Social Studies and earned a 74.8, and Pablo took a test in Science and earned a 64.1. Use the fact that all the students' test grades in the Social Studies class had a mean of 72.6 and a standard deviation of 9.3, and all the students' test grades in Science had a mean of 61.1 and a standard deviation of 9.8 to answer the following questions.

Calculate the z score for Thomas test grade.

4 0
1 year ago
the product of 7 and a number increased by 3 is equal to twice the number subtracted from 39 find the number
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