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Adam tabulated the values for the average speeds on each day of his road trip as 60.5, 63.2, 54.7, 51.6, 72.3, 70.7, 67.2, and 65.4

Adam tabulated the values for the average speeds on each day of his road trip as 60.5, 63.2, 54.7, 51.6, 72.3, 70.7, 67.2, and 65.4 mph. The sample standard deviation is 7.309.

Select the 98% confidence interval for Adam's set of data.

  • 55.45 to 70.95
  • 46.94 to 79.46
  • 55.45 to 79.46
  • 46.94 to 71.33

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