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The university data center has two main computers. The center wants to examine whether computer 1 is receiving tasks that require processing times comparable to those of computer 2. A random sample of 10 processing times from computer 1 showed a mean of 69 seconds with a standard deviation of 15 seconds, while a random sample of 11 processing times from computer 2 (chosen independently of those for computer 1) showed a mean of 67 seconds with a standard deviation of 17 seconds. Assume that the populations of processing times are normally distributed for each of the two computers and that the variances are equal. Construct a 95%confidence interval for the difference M1-M2 between the mean processing time of computer 1,M1 , and the mean processing time of computer 2, M2. Then complete the table below.
1. What is the lower limit of 95% confidence interval?
2. What is the upper limit of 95% confidence interval?
Draw a simulation experiment for car agency and simulate using fleet of four rental cars for 10 days.
The Ludlow Wildcats baseball team, a minor league team in the Cleveland Indians orgainzation, plays 70 precent of their games at night and 30 percent during the day.
If employee is chosen at random, determine these probabilities.The Employee smokes, The employees smokes, given that he/she graduated from college.
Create a 95% confidence interval for true mean.
The quality control engineer for a furniture manufacturer is interested in the mean amount of force necessary to produce cracks in stressed oak furniture.
What is the likelihood all four of the selected flights arrived within 15 minutes of the scheduled time?
Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level.
Given the variances of the two samples below, find the test value and the degrees of freedom that should be used in an F test.
Using data provided, test if there is a difference between means at alpha =.05.
1) What is correlation? 2) What is an example of two variables that are likely to be correlated because they are both changing over time?
In the history class the mean score was 76 with standard deviation 3.
The random number generator on calculators randomly generates a number between 0 and 1. The random variable X, the number generated, follows a Uniform Probability Distribution. What is the probability of generating a number between 0 and 0.2?
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