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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.
If an individual from this age group is selected, find the probability that his or her blood pressure will be between 70 and 95. Assume normal distribution.
1 a batch of 500 containers for fronzen orange juice contains five that are defective. two are selected at random
Draw the standard normal distribution, label the axis, locate both z-scores on the axis (z7 = -1.5, z15 = 2.5), and shade an area equal to the probability that a randomly chosen croaker fish will be b/t 7 and 15 inches.
mean grade point average. as part of a study of grade inflation you want to estimate the mean gpa of all current
Antidepressant is normally distributed with a mean of 6 lbs and a standard deviation of 3 lbs. What is the probability of weight gain? What is the probability of gaining between 0 and 12 lbs?
a 15 cm3 cylinder contains nitrogen at 70 atm and 20 degrees celsius. this cylinder is placed in a 10000 cm3 evactuated
because of high production-changeover time and costs a director of manufacturing must convince management that a
Probability that the flavor will be carried by Appleton or Beacon is 15/16. Determine the probability a flavor is carried by both Appleton and Beacon.
Point of Control in Control Chart and Six Signma in Production Process
If we are dealing with non-normal data we use Chebychev's Theorem. While not as precise, it does provide some level of utility. If we use Chebychev
The Internal Revenue Service (IRS) provides a toll-free help line for taxpayers to call in and get answers to questions as they prepare their tax returns.
Calculate table T t . Calculate Computed T c .
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