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A scientist measured the speed of light. His values are in? km/sec and have? 299,000 subtracted...

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Basic Math

A scientist measured the speed of light. His values are in?km/sec and have? 299,000 subtracted from them. He reported theresults of 30 trials with a mean of 756.23 and a standard deviationof 108.68.

?a) Find a 95?% confidence interval for the true speed of lightfrom these statistics.

?b) State in words what this interval means. Keep in mind thatthe 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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