Question

Suppose that a 95% confidence interval states that population mean is greater than 100 and less than 300. Then the value of sample mean $(\bar{x})$ and margin of error (E) respectively are :

• A. 150, ±100
• B. 100, ±100
• C. 250, ±50
• D. 200, ±100

Answer 1

Answer: (D)

200, ±100

Answer 2

The correct option is (D) :200, ±100.