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Suppose μ1 and μ2 are true mean stopping distances at 50 mph for cars of a...

Suppose μ1 and μ2 are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of braking systems. The data follows: m = 6, x = 115.1, s1 = 5.02, n = 6, y = 129.8, and s2 = 5.36. Calculate a 95% CI for the difference between true average stopping distances for cars equipped with system 1 and cars equipped with system 2. (Round your answers to two decimal places.)

Does the interval suggest that precise information about the value of this difference is available?

Math   Statistics-And-Probability   
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The interval is 95% confident that the value for the difference lies within the interval.

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