For questions 13-15. There are 225 participating dogs at the National Dog Show that weigh an average of 5 kilos, with a standard deviation of 3.5 kilos. If 30 dogs are selected at random, what is the probability they have an average weight of greater than 4 kilos and less than 7 kilos? 13. What is the value of the standard error? A. 0.64 В. 3.5 С. 5.2 D. 6.7

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