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Determine a 95% confidence estimate for the mean time between failures (MTBF) of a power supply. We have 200,000 hours equipment hours of data and two failures occured during that time. Assume the the operating time was failure terminated.
Explain how significance is determined in simple terms as well and define a statistical interaction and how it affects your results. Give an example. List the variables that are interacting and why.
What is the expected number of Republicans who will win office in the coming election?
fitting of simple linear regression equation.given the student population for a school district over the past few years
Need to come up with a regression model to forecast monthly sales of cold beverages for the next year. What variables might be included in the model?
Perform all pairwise comparisons among the three programs, using a Tukey adjustment and an overall significance level of 0.05, then interpret all your results.
Two events, A and B are equally likely. The chance that either A or B happens on a given trial of an experiment is 0.70, while the chance that they both happen on a given trial is only 0.40.
1. if the alpha level is changed from a of 0.05 to a 0.01 what happens to the probability of type 1 error ?2.answer the
If 15% of the suitcases are overweight, find the maximum weight allowed by the airline. Assume the variable is normally distributed.
A store has determined that 25% of all sales are credit sales. A random sample of 75 sales is selected. What is the probability that the sample proportion will be:
an american association of individual investors aaii survey found that 23 of aaii members had purchased shares of stock
chi-square test for independent of attributes.a random sample of students is interviewed to determine if there is an
A recent article in Vitality magazine reported that the mean amount of leisure time per week for American men is 40.0 hours. You believe this figure is too large and decide to conduct your own test.
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