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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.
What is the probability that event A happens?
Three different methods for assembling a product were proposed by an industrial engineer. To investigate the number of units assembled correctly with each method
Suppose that 1 out of 500 infant's are born with Down's Syndrome.
How long do new batteries last on a camping trip? A random sample of n1 = 42 small camp flashlights were installed with brand I batteries and left on until the batteries failed.
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. State the null hypothesis and the alternate hypothesis.
Explain why we need to use the t distribution. What assumption do you need to make?
Inventories represent a considerable investment for every organization; thus, it is important that they be managed well. Excess inventories can indicate poor financial and operational management.
Construct a 95% confidence interval estimate for the population proportion of administrative professionals who prefer cash bonuses.
Micron Electronics makes both desktop and laptop personal computers that they sell directly to customers by phone or over the Internet.
If you are using the method of least squares for fitting trends in an annual time series containing 25 consecutive yearly values,
Determine the probability that a randomly selected teacher earns more than $525 per week?
The first unit required 9800 hours to manufacture. The company expects to experience an 82% unit learning curve. Estimate the cost of the 20th unit. (Round intermediate calculations to 4 decimal places)
What was the success probability of each O-ring?
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