Answer:
c
Step-by-step explanation: If you do the math you can clearly see and I got the answer correct.
Answer: The required confidence interval is (56.1,66.9).
Step-by-step explanation:
Since we have given that
53.1, 60.2, 60.6, 62.1, 64.4, 68.6
n = 6
Margin of error = 5.4
At 95% level of confidence, z = 1.96
So, the confidence interval would be
Hence, the required confidence interval is (56.1,66.9).