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(a) Choose one time-series describing Airlines and make a line chart.
(b) Describe the trend (if any) and discuss possible causes.
(c) Fit both a linear and an exponential trend to the data.
(d) Which model is preferred? Why?
(e) Make a forecast for 2003, using a trend model of your choice (or a judgment forecast).
An element E has a constant failure rate λ and a reliability at time t of R(t)=p, if p=0.5 and 0.9, what is the effect on Rs(t), basic reliability, serial Mean Time Between Failure, hs(t), MTBFs if additional elements are added to the baseline sys..
Compute a seasonalized or adjusted sales forecast.
A researcher looks at the effect of 3 different drugs on 3 different groups of 10 people. Numbers refer to stress levels, with lower numbers being lower stress.
Calculate the sample statistic and standard error you will use to create the test statistic.
Find the probability that a random sample of 4 male Siberian tigers will have a sample mean weight more than 450 lb.
The grade point averages for 10 randomly selected high school students are listed below. Assume the grade point averages are normally distributed.
If 64 students were randomly sampled, the probability that the sample mean of the sampled students exceeds 73.5 minutes is approximately 0.
These individuals are then examined and categorized as to whether they have a heart disorder. The observed frequencies are as follows:
Suppose that you are interested in determining the effectiveness of an intensive supervision program (ISP) for poor student performers. To examine its effectiveness, you keep track of 12 students entering an ISP for one year and tabulate the numbe..
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
Probability based on normal distribution. Suppose among X has a normal distribution, and find the indicated probability.
Based on your analysis, how is the new bottling process working?
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