For finding the pvalue when the population stardard deviatio

For finding the p-value when the population stardard deviation is unknown, if it is reasonable to assume that the population is normal , we use the standard normal distribution. true or false

Solution

FALSE. It still depends on the sample size. Even if the distirbution is normal, if the sample size is too small, we can\'t use the standard normal distrbution. We have to use the t distribution.