Question: Population 1 Population 2 My = 12 U2 = 10 61 =4 02 = 3 9. Independent random samples of 64 observations each are chosen

Population 1 Population 2 My = 12 U2 = 10 61 =4 02 = 3 9. Independent random samples of 64 observations each are chosen from two normal populations with the means and standard deviations shown. Assume that x,and X2denote the two sample means. What is the standard deviation of the sampling distributionx2? O A. .425 O B. .375 O C. .5 O D. .565

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