Based on geological studies done on land in East Texas, a petroleum company believes the probability offinding high-quality oil is 25%, medium-quality oil is 41%, and no oil is 34%. Since drilling can be expensive,the petroleum company also plans on doing a soil test (since certain soil types are more apt to detect thepresence and quality of oil). For example, the petroleum company knows that in 23% of high-quality oilfinds, 16% of medium-quality oil finds, and 7% of no oil finds, the soil is Type A. So, for East Texas land...Find the probability of high-quality oil given the soil is Type A.

It is given that, the probability of finding high quality oil is 25%, medium-quality oil is 41% and…

Answered: Based on geological studies done on…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Teenagers who do not sleep well or long enough may have a higher risk of raised blood pressure, which could lead to cardiovascular disease later in life. The odds of raised blood pressure increase 3.5 times for those who have trouble falling asleep at night or who wake up too early and 2.5 times for those with sleeping periods of fewer than 6.5 hours. A health psychologist is interested in studying teenagers who have diastolic blood pressure scores in the top 20%. Diastolic blood pressure scores for teenagers follow a normal distribution with μ = 72 and σ = 10. Use the Distributions tool to help answer the questions that follow. The minimum z-score necessary to be in the top 20% of the diastolic blood pressure distribution is z =0.842 . Use this z-score to determine X, the corresponding diastolic blood pressure score. X = 80.42 This score, X, is the 80th percentile of diastolic blood pressure scores among teenagers. The percentile rank of this score is 80%…
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The proportion of items in a population that possess a specific attribute is known to be 0.25 a. If a simple random sample of size n=100 is selected and the proportion of items in the sample that contain the attribute of interest is 0.30, what is the sampling error b. Referring to part a, what is the probability that a sample size of 100 would have a sample proportion of 0.30 or less if the population proportion is 0.25
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