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The storage time (in months) until a collection of long-life Li/SO4 batteries become unusable was modeled in Morris (1987)9 as a Weibull distributed random variable with ζ = 2 and β = 10. Let us refer to this variable as the battery's "maximum storage life," MSL.
(i) What is the "most likely" value of the MSL? (By de?nition, the "most likely" value is that value of the random variable for which the pdf attains a maximum.)
(ii) What is the median MSL? By how much does it di?er from the expected MSL?
(iii) What is the probability that a battery has an MSL value exceeding 18 months?
A video rental store has two video cameras available for customers to rent. Historically, demand for cameras has followed this distribution:
Consider randomly selecting a student at a certain university, and let A denote the event that the selected individual has a Visa credit card and B be the analogous event for a MasterCard. Suppose that P(A) = .5, P(B) = .4, and P(A intersect B..
the hours of study and the final exam grades have this type of relationship y 5.76hours 35.31. based on this linear
Suppose a simple random sample of 20 non-English student have an average math score on the SAT exam of 528. What are the appropriate hypotheses?
a researcher would like to evaluate the claim that large doses of vitamin c can help prevent the common cold. one group
the college physical education department offered an advanced first aid course last quarter. the scores on the final
Indicate which of the following responses below is correct. Discuss why it is correct or discuss why standard deviation is such a valuable statistic in so many situations.
What is ethics? Ethics is basically concerned with the Moral obligations, responsibilities and social justice of the world. It invokes the idea of "how people should act".
Compute the p-value; and at 95% confidence, test the hypothesis. Assume the population is normally distributed. Compute the test statistic.
What proportion of time will it take clean-up crew 56 or more hours for cleaning plant? Define the lower and upper limits of interval.
Data file XR16056 lists the following information for a sample of local homes sold recently: selling price (dol- lars), lot size (acres), living area (square feet), and whether the home is air conditioned (1 5 AyC, 0 5 no AyC).
suppose 55 of students are female of which 44 have long hair and 45 of students are male of which 15 have long hair.
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