The 90% confidence interval for a population mean is 62.79 to 69.51. It was calculated based on a sample whose standard deviation was 6. What can you say about the mean of that sample? Choose one of the following: O None of the other four alternatives shown is necessarily true. O The mean of that sample could be any value in between 62.79 and 69.51. O As the mean of that sample depends on its sample size, it cannot be determined based on the information provided. O There is 90% chance that the mean of that sample lies between 62.79 and 69.51. O The mean of that sample was greater than 65.
