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The average length of time customers spent on waiting at xyz store's check-out counter before a new P.O.S. system was installed was 5.1 minutes. A sample of 49 customers randomly selected at the check-out counter after the new P.O.S. system was installed showed that the average waiting time was 4.55 minutes with a sample standard deviation of 1.45 minutes. We wish to determine if there has been a significant decrease (from 5.1 minutes) in the average waiting time after the P.O.S. system was installed
1. State the null and alternative hypotheses to be tested.
2. Compute the test statistic.
3. Determine the critical value for this test at the 0.05 level of significance.
4. What do you conclude at the 0.05 level of significance?
5. Construct a 95% confidence interval for the average waiting time after the new P.O.S. system was installed.
Based on the following sequence of word addresses generated by the processor:1, 134, 212, 1, 135, 213, 162, 161, 2, 44, 41, 221a) Given a direct-mapped cache with 8 two-word blocks that is initially empty
There may be times when you are asked to develop a computer system tailored to the customer's needs. An example would be the graphics and publications department of a company. Using this or another example, write an essay describing the customization..
Name and describe two examples of government policies that act as automatic stabilizers. Explain why each policy has this effect.
What is a Recommended Book Program that will ask the user to enter an user's age using the if-else statement using JavaScript coding syntax?
Is it possible to write a state diagram with a small number of states to describe the behavior of this finite state machine? Does your state diagram need to track all possible sequences of 9 bits?
Part 1: define an information systems security policy framework for an it infrastructure
Investigate the Apparent Intersection object snap. Of what use is an object snap that allows you to snap to a point where two objects only seem to intersect? Give an example.
A manager has asked the administrator to change the default background of her machine, which uses XDM. Which file does the administrator need to modify in order to achieve this?
Joe was told that the Remote Assistance feature was not working for users after a new firewall was installed. What could be causing the problem?
Suppose that a new entry has decreased your demand elasticity from -5 to -6 (made demand more elastic) and that your price, before the new entry, was $20.
a) Describe the concept of an artificial neural network
Discuss your feelings on the current macroeconomic situation in the United States? What should the Fed do about it?
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