suppose a population consists of the scores of 5 teachers in a particular subject as follows 8, 9, 10, 11, and 12. by using a sampling distribution, estimate the population mean (u) using a random variable of size n=2

the average age of private vehicles in Marilao Bulacan is 6 years. Assume that the standard deviation is 2 years. A random sample of 10 private vehicles is chosen, find the probability that the mean of private vehicles ages is   a. ...

The average salary of a sales lady in malls in Metro Manila is P 430/ a day. Assume a normal distribution with a standard deviation of P 80.What is the probability that a random selected sale lady is receiving a ...