Mathematics

2 August, 10:36

Gardeners on the west coast of the United States are investigating the difference in survival rates of two flowering plants in drought climates. Plant A has a survival rate of 0.74 and plant B has a survival rate of 0.48. The standard error of the difference in proportions is 0.083. What is the margin of error for a 99% confidence interval? Use critical value z = 2.576.

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