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CONFIDENCE INTERVALS IF WE HAVE THE MEAN BUT NOT THE STANDARD DEVATION WE USE THE _______, BUT IF WE HAVE THE MEAN AND THE STANDARD

CONFIDENCE INTERVALS IF WE HAVE THE MEAN BUT NOT THE STANDARD DEVATION WE USE THE _______, BUT IF WE HAVE THE MEAN AND THE STANDARD DEVAITION WE USE THE _________

(a) z-Tables and t-Tables (b) t-Tables and z-Tables (c) neither, we cant calculate a confidence interval.

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