A confidence interval was calculated using a sample size of n = 100 to make an inference about a population parameter μ. The standard deviation of the population was known to be σ = XXXXXXXXXXThe...

A confidence interval was calculated using a sample size of n = 100 to make an inference about a population parameter μ. The standard deviation of the population was known to be σ = 57.14. The calculated confidence interval was (10, 30). Using this information, determine the confidence level of this confidence interval. Round your answer to the nearest percent.