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Ninety percent of service calls regarding kitchen appliances involve a minor repair. For example, the customer did not read the instructions correctly or perhaps failed to connect the appliances correctly. These service calls cost $50. Service calls for major repairs are more expensive. Sixty percent of service calls for major repairs cost the customer $300 or more. What is the probability that a randomly selected service call cost $300 or more?
The probability a randomly selected service call cost $300 or more is ?
Decide between two stock investment choices. Determine the probability for each condition to make the investment even between the two.
1. What is the relationship between the power of a statistical test and decision errors?
1 from a high school with 40 freshman 38 sophmore 35 juniors and 30 seniors a random sample of 8 students is taken
You ask your neighbor to water a sickly plant while you are on vacation. Without water it will die with probability .8; with water it will die with probability .15. You are 90 percent certain that your neighbor will remember to water the plant. ..
One of 4 bus drivers is also arbitarily chosen. Let Y denote number of students on his bus. Calculate expectations and variances of X and Y.
suppose that a certain college class contains 65 students of these 35 are seniors 37 are economic majors and 7 are
If one of the 1200 pacemakers is randomly selected and is found to be defective, what is the probability that it was manufactured in Atlanta?
In your own words, define epistemology and ontology. Why are these concepts important to the study of research? How might the concepts influence your future research?
Analysis of weekly widget production reveals that the number of widgets X produced in a week is a random variable with mean μX = 200 and standard deviation σX = 20. What are the mean and the standard deviation of C?
Draw a chart to describe these prices paidby the networks - How satisfied are you with our customer service on a scale - Construct a histogram.
The manager of a service station is in the process of analyzing the number of times car owners change the oil in their cars. She believes that the average motorist changes his or her car's oil less frequently than recommended by the owner's manual (t..
Given that the pair of hypotheses that correspond to the claim are H0=500. Find the critical value for the hypothesis test.Assume that the level of significance is 0.02.
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