Refer to the data in Table 13-8 on order fulfillment time. Table 13-8 You decide to develop

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Refer to the data in Table 13-8 on order fulfillment time.

  • Table 13-8
  • You decide to develop a regression model using order value and the number of products in the order as predictors. Find the model equation. Is it significant at = 0.05?
  • Find R2 and R2a and comment relative to the model in Exercise 13-9.
  • Is the predictor, number of products, significant in the presence of the other predictor? Test using α = 0.05.
  • Find a 95% confidence interval for the mean fulfillment time for an order value of $75,000 and the number of products being 65.
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