Question: An article in Computers in Electrical Engineering (Parallel Simulation of Cellular Neural Networks, 1996, Vol. 22, pp. 6184) considered the speed-up of cellular neural networks
An article in Computers in Electrical Engineering
(“Parallel Simulation of Cellular Neural Networks,” 1996, Vol. 22, pp. 61–84) considered the speed-up of cellular neural networks (CNN) for a parallel general-purpose computing architecture. The data follow.

a) Is there sufficient evidence to reject the claim that the mean speed-up exceeds 4.0? Assume that 0.05.
(b) Do the data have an approximately normal distribution?
Provide a graphical display to support your answer.
(c) Find a 95% two-sided CI on the mean speed-up time.
(d) What sample size would be required to detect a true mean speed-up time of 4.75 if we want the power of the test to be at least 0.8? Use the sample standard deviation s computed in working part
(a) as an estimate of .
3.775302 3.350679 4.217981 4.030324 4.639692 4.139665 4.395575 4.824257 4.268119 4.584193 4.930027 4.315973 4.600101
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