Confidence Intervals and Hypothesis Testing

At the 1% significance level we support the claim that mu is not equal to 1.85, this means that the machine has slipped out of adjustment. P = 2*P(x-bar > 1.87)= 0.001 < 0.01 Low probability value, x-bar = 1.87 is inside the tail – it’s unlikely to observe such a sample mean, or a … ................
................