Solve the following:
How to calculate probabilities without knowing the std deviation.
Population = 3005
Calculate P(x-bar > 50.8) for sample size of n = 253
Calculate P(x-bar > 50.6) for sample size of n = 134
Calculate P(x-bar > 51) for sample size of n = 119
Then combine the two probabilities 51 and 50.6 into one using the concept of independent events.