Last post, we talked about the way of figuring out the sampling probability from the population distribution.But this time, we will take a look at the method that finds out the population probability using the sample normal distribution.
Most of cases, it is impossible to figure out the population mean. we want to guess the population mean from the sample we got.
I think, this quiz might be happen in your daily lives
Quiz) you sampled 50 students from 3,000 students in your community high schools.
average height is 150 with a 20 meters sample standard deviation.
Calculate the probability that the average height of all student is
between 145 and 155.
