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An oil executive has determined that the probability that this oil field contains oil is 0.6. Before starting the drilling she decides to order a seismological test to see if there is oil in the ground. Unfortunately, the test is not entirely accurate. It concludes that there is oil with probability 0.9 if there is indeed oil in the ground. If there is no oil in the ground, it concludes so with probability 0.8. Suppose the test result come back positive (i.e., the test says there is oil in the ground). What is the probability that there is indeed oil in the ground given this test result?
A person purchases a package of 10 ball-point pens which, unknown to the purchaser, contains 4 defective pens. Of the first 2 pens used by the purchaser
A population of scores forms a normal distribution with a mean of μ = 40 and a standard deviation of σ =12.
Based on our sample, how do you interpret the results and what do these results suggest about the population means for male and female average salaries?
based on available information lead time demand for cd rom drives averages 250 units normally distributed with a
determine the area under the standard normal curve in parts a through c below. find the area under the normal curve to
in a study it was found that the average age of cable tv shoppers was 48 years. suppose you want to test the null
when circuit boards used in the manufacture of compact disc players are tested the long-run percentage of defectives is
The results of a survey for an airline are shown below. Use the chart to find the probability that the traveler was
in a study by peter d. hart research associates for the nasdaq stock market it was determined that 20 of all stock
Carryout the ANOVA and, if essential, post-hoc comparisons. Conduct a graph to represent group differences, and interpret ANOVA in a paragraph written in APA style.
X, Y, and Z are independent normally distributed random variables. The following information is known about these three variables:
your score on a statistics tests is 63 and on your biology test you made a 23. the mean in statistics was 60 with a
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