38. A sample of 75 students found that 55 of them had cell phones. The margin of error for a 95% confidence interval estimate for the proportion of all students with cell phones is a. 0.084 b. (0.633, 0.833) c. 0.100

38. A sample of 75 students found that 55 of them had cell phones. The margin of error for a 95% confidence interval estimate for the proportion of all students with cell phones is
a. 0.084
b. (0.633, 0.833)
c. 0.100

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