Question

Express the confidence interval using the indicated format. Express the confidence interval 0.491 ± 0.057 in the form of - e < p < e.

a) -0.548 < p < 0.548
b) -0.548 < p < 0.605
c) -0.434 < p < 0.548
d) -0.434 < p < 0.605

Answer 1

The correct expression of the confidence interval 0.491 ± 0.057 in the form of - e < p < e is -0.548 < p < 0.548.

Step-by-step explanation:

The given confidence interval is 0.491 ± 0.057. To express it in the form of - e < p < e, we need to subtract the margin of error (0.057) from the lower bound (0.491) and add it to the upper bound (0.491). This gives us the interval -0.548 < p < 0.548. Therefore, option a) -0.548 < p < 0.548 is the correct answer.