Question: 13. The graph shows the population distribution of random variable X with mean 85 and standard deviation 18. 20 30 40 50 60 70 80

13. The graph shows the population distribution of random variable X with mean 85 and standard deviation 18. 20 30 40 50 60 70 80 90 100 110 - X from the population? Which of the following graphs is a sampling distribution of the sample mean x for samples of size 40 taken (A) (B) 20 30 40 50 60 70 80 90 100110 - P 72 74 76 78 80 82 84 86 88 90 92 94 96 (C) (D) 83 85 87 58 60 62 64 66 68 70 72 74 (E) 10 20 30 40 50 60 70 80 90

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