The cоmpressive strength оf cоncrete is normаlly distributed with а populаtion mean equal to 2100 psi and population standard deviation equal to 35 psi. A random sample of eight specimens is collected. What is the probability that the sample mean is less than 2120 psi? Express your answer to three decimal places. You must use the online calculator, ti84calculator.io, to answer this question. If you don't use the online calculator, even if you get the question correct, the score on the question will be 0.