5.69 The effect of the sample size.
Refer to Exercise 5.63, where you simulated the sampling distribution of the mean of two uniform variables, and Exercise 5.65, where you simulated the sampling distribution of the mean of 12 uniform variables.
5.69
(a) The simulated mean using 12 uniform variables should have smaller variability than the simulated mean using only 2 uniform variables. (b) The simulations should have confirmed this.