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1. A government agency was charged by the legislature with estimating the length of time it takes citizens to fill out various forms. Two hundred randomly selected adults were timed as they filled out a particular form. The times required had mean 12.8 minutes with standard deviation 1.7 minutes. Construct a 90% confidence interval for the mean time taken for all adults to fill out this form.
The amount of time a bank teller spends with each customer has a population mean, µ, of 3.10 minutes and standard deviation, s, of 0.40 minute.
Choice of exponential smoothing constant w has little or no effect on forecast values using exponential smoothing.
A gambler plays a game in which on each play he wins one dollar with probability p and loses one dollar with probability q = 1 - p. The Gambler's Ruin problem is the problem of finding the probability wx of winning an amount T before losing everyth..
Explain the terms parameter and statistics. Make sure the concepts of population and sample are included in the definitions.
For each of the following statements, formulate appropriate null and alternative hypothese, indicate whether the appropriate test will be one-tail or two-tail, then sketch a diagram that shows the approximate location of the rejection region(s) fo..
Residing in Fort Walton Beach, Florida and working at Eglin AFB. It can be a challenge to drive to each morning since the base is under construction. If there's an accident or construction being worked, this can also increase the wait time it ta..
why must the service rate be greater than the arrival rate in a single-channel queuing
For the probability function- verify that the mean and variance are 0.3 and 0.21. What is the probability of getting a value less than the mean?
Calculate a 95% confidence interval for the average amount of trans fat per serving in all foods that are listed as having zero grams of trans fat per serving.
Using sample, determine a 98% confidence interval for mean weight of whole daily output.
National average for 2-year leases is 30,000 miles. Select the suitable hypothesis.
the total number of cars and light-duty trucks sold in 2013 was 2.234 million while 1.346 million were sold in 2009.
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