anova at the 0 05 level of significance is there evidence of a difference

Please help with al 3 qustions and show step by step work for each question

  1. At the 0.05 level of significance is there evidence of a difference…
  2. Do the results in question 1 indicate that it is appropriate to use the Tukey-Kramer procedure to determine which designs differ…. (You may need to do a little research of your own to get the equations to do this…it is not hard but Excel does not do this calculation with a “couple of clicks.”)
  3. If the manufacturer wished to build the ….which design should the firm select?
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