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Question: Faulty or not? You are in charge of shipping computers to customers. You learn that a faulty disk drive was put into some of the machines. There's a simple test you can perform, but it's not perfect. All but 4% of the time, a good disk drive passes the test, but unfortunately, 35% of the bad disk drives pass the test, too. You have to decide on the basis of one test whether the disk drive is good or bad. Make this a hypothesis test.
a) What are the null and alternative hypotheses?
b) Given that a computer fails the test, what would you decide? What if it passes the test?
c) How large is for this test?
d) What is the power of this test? (Hint: How many possibilities are in the alternative hypothesis?)
A student studying for a vocabulary test knows the meanings of 12 words from a list of 20 words. If the test contains 10 words from the study list.
astudy of 31000 hospital admissions in new york state found that 4 of the admissions led to treatment-caused injuries.
a. What type of error would you make if the null hypothesis is actually false and you fail to reject it?
Multiple regression and correlation analysis provides a means for examining the relationship between of two (2) or more independent variables and the dependent variable.
Could you please send me an example of a real-world situation or problem addressing the independent and dependent variables study; that includes a research question
A quick quiz consists of five multiple-choice questions, each with four possible answers, only one of which is correct. If you make random guesses for each answer, what is the probability that all five of your answers are wrong?
The consultant has offered to share their analysis with your company for a fee of $25.0 million. What is the Expected Value of Perfect Information in this scenario?
What is the role of trade terms in global transportation? Briefly describe the four groups of Incoterms.
given an initial distribution of px z exp-zx with z 0.2 and an uncertainty term with a standard deviation of 2.
a car company made a change to their fuel injection system that may improve gas mileage. to determine if this was the
The development efforts may or may not generate minor innovations that would offset some of the battery's development costs. The tree below summarizes the decision - Which of the best describes the distribution of these 100 averages?
Suppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a given battery is still operating with a probability of 0.70 and has failed with a probability of 0.30.
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