If the Standard Deviation is Unknown
{"Image DocumentName": "If the Standard Deviation is Unknown", "Image ImageDescription": "If we don\u2019t know the population mean, its likely we don\u2019t know the standard deviation. What you are likely to have is the variance and standard deviation of your sample. Also, you have a small population, so you have to use the finite population correction factor that was discussed earlier. Once you have the formula for standard error, then you can proceed as before to determine the confidence interval.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}