Final answer:
To compute an 88.9% confidence interval (or Hebyshev interval) around the population mean, you need to know the sample mean, sample standard deviation, and the number of observations in the sample.
Step-by-step explanation:
To compute an 88.9% confidence interval (or Hebyshev interval) around the population mean, we need to know the sample mean, sample standard deviation, and the number of observations in the sample. Without these values, we cannot calculate the confidence interval. Once we have these values, we can use the appropriate formula to calculate the interval.