Suppose 4, and u, are true mean stopping distances at 50 mph for cars of a...

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Suppose 4, and u, 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- 9, x= 115.7, s, - 5.06, n = 9, y- 129.7, and s, - 5.33. Calculate a 95% CI for the difference between true average stopping distances for cars equipped with system 1 and cars equlpped 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? O Because the linterval is so narrow, It appears that precise Information is available. O Because the interval is so narrow, it appears that precise information is not avallable. O Because the Interval is so wide, it appears that precise information is not available. O Because the interval is so wide, it appears that precise information is available. Suppose 4, and u, 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- 9, x= 115.7, s, - 5.06, n = 9, y- 129.7, and s, - 5.33. Calculate a 95% CI for the difference between true average stopping distances for cars equipped with system 1 and cars equlpped 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? O Because the linterval is so narrow, It appears that precise Information is available. O Because the interval is so narrow, it appears that precise information is not avallable. O Because the Interval is so wide, it appears that precise information is not available. O Because the interval is so wide, it appears that precise information is available.