√1000以上 n 30 statistics 887294-N 30 statistical significance
µµo 3 Test statistic Assume that H0 is true and see if you have enough data/evidence to reject it 3B How far sample mean x is from µ n x z o σ −µ = 4But you can use the standard deviation of your sample if you have enough observations at least n=30T distribution is the distribution of any random variable 't' Below given is the T table for you to refer the one and two tailed t distribution with ease It can be used when the population standard deviation (σ) is not known and the sample size is small (n30) Statistics And Probability Module 4 Identifying Appropriate Test Statistics Involving Population Mean Shs Modules N 30 statistical significance