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Suppose [41 and [42 are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of braking
Suppose [41 and [42 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 = 5, )_( = 114.9, 51 = 5.09, n = 5, I! = 129.5, and 52 = 5.35. Ca culate 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.) I2 USE Does the interval suggest that precise information about the value of this difference is available? 0 Because the interval is so wide, it appears that precise information is not available. 0 Because the interval is so wide, it appears that precise information is available. 0 Because the interval is so narrow, it appears that precise information is available. 0 Because the interval is so narrow, it appears that precise information is not available. You may need to use the appropriate table in the Appendix of Tables to answer this
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