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23. Which one of the following statements is false? (a) There is significant evidence of a difference in mean longevity between the groups (at a

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23. Which one of the following statements is false? (a) There is significant evidence of a difference in mean longevity between the groups (at a = .05). (b) The pooled sample variance is equal to 56. (c) The sample means were not all equal. (d) This was a balanced experimental design. x (e) None of the above

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