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A scientist measured the speed of light. His values are in km/sec and have 299,000 subtracted from them. He reported the results of 22 trials

A scientist measured the speed of light. His values are in km/sec and have 299,000 subtracted from them. He reported the results of 22

trials with a mean of 756.25 and a standard deviation of 118.37.

a) Find a 95% confidence interval for the true speed of light from these statistics.

b) State in words what this interval means. Keep in mind that the speed of light is a physical constant that, as far as we know, has a value that is true throughout the universe.

c) What assumptions must you make in order to use your method?

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