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3. a) In Arlington, 25% of all homes are all electric. Sixty percent of the all electric homes have air conditioning while only one-fourth of the gas-heated homes are air-conditioned. During a casual conversation, a young woman you just met at Bardo remarks how nice it is to return home after work this summer because her air-conditioning is set very low. What is the probability that she lives in an all electric home?
b) You are the production manager for ING Oil and Gas Exploration examining a candidate site. Assume that oil either exists in producible quantities or does not exist at all. Similar site have yielded oil about 20% of the time.A test is performed on the soil at the site. In the past, oil was present 90% of the times that the test indicated "oil." Conversely, oil was actually present 15% when the test results indicated "no oil."If a single test is run and indicates that oil is present,what is the revised probability that oil is actually present.
estimate the probability that a randomly selected prime-time television show will be interrupted with a news
Calculation of Mallows Cp and Mallows Cpk
question a researcher conducted and experiment on the effects of a new drug on depression. the researcher had a
find the variance and standard deviation of this data set 20 29 25 25 22 11 16 24 show
Compute the p-value and interpret its meaning - Construct a 95% confidence interval estimate of the population mean life of the light bulbs.
question random sampling from two normal populations produced the following resultsx1
Is there sufficient evidence at a = 0.05 to conclude that the students did better the second time? Discuss possible reasons for your results.
What is meant by Econometrics , Regression analysis and Disturbance or error term?
Perform Repeated Measures ANOVA also calculate PRE. An educational study uses a simple pre-post design to assess the value of a computer tutor for solving inequalities.
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Ther are 8 balls in a sample 5 white and 3 black .x is the number of black balls in the sample. three white are selected. white are selected from sample.write the probability distribution and find of x . and find mean , variance and standard deri..
Decileter and standard deviation of 41 mg/dl. in an srs of 100 men what is the probability that x bar takes a value between 185 and 191 mg/dl?
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