At the end of Section 8 2, we noted that we always round up when calculating the minimum sample size for a confidence interval for with a specified margin of error and confidence level Using the formula for the margin of error, explain why we must always round up in this situation ...

Since E z zn if we select a ...

At the end of Section 8.2, we noted that we always round up when calculating the minimum

Question:

At the end of Section 8.2, we noted that we always round up when calculating the minimum sample size for a confidence interval for µ with a specified margin of error and confidence level. Using the formula for the margin of error, explain why we must always round up in this situation.