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The blade and the bearings are important parts of a lathe. The lathe can operate only when both of them work properly. For one kind of lathe, the lifetime of the blade is exponentially distributed with the mean three years; the lifetime of the bearings is also exponentially distributed with the mean four years. Assume each lifetime is independent. Round your answer to four decimal places (e.g. 98.7654).
(a) What is the probability that the lathe will operate at least seven years?
Using variables below, (1) mention all research questions that would be replied with a Two Way ANOVA test, (2) make null hypotheses for these questions.
The issue of how much should be spent to solve particular U.S. social problems is a complex matter, and people have diverse and conflicting ideas on these issues.
The standard deviation of grade points was 0.65 and the mean was 2.89. The standard error for the sample was
Consider the experiment of tossing a fair coin three times and observing the number of heads that result (X = number of heads).
Calculate table T t . Calculate Computed T c .
Recognize sample, population, sample statistic, and population parameter: Nasonex is the drug used to treat allergy symptoms.
Which probability distribution is suitable when sampling without replacement?
Explain the distribution of mean of samples of size 15.
Assume that you have selected 10 students enrolled at your college and have collected data for these three variables:
An assembly line turns out 10% deffectives. Determine an acceptance number and sampling plan for samples of size 14 and a producers risk of 3%. (AQL = 10)).
A local politician wants an estimate of the proportion of the population who support her fiscal policies. She wants the estimate to be within .06 of the true proportion. Assume a 95 percent level of confidence.
Given that the student you choose is a senior, find out the probability of selecting a non-senior?
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