A simulation was done to produce sample means for a particular population. If the mean of the simulated sample means was 15.3 and the standard deviation of the simulated sample means was 2.8, which of the following would be true? (1) a sample mean of 10.5 would be plausible but a sample mean of 18.3 would not (2) a sample mean of 9.1 would be plausible but a sample mean of 22.8 would not (3) a sample mean of 8.5 would not be plausible but a sample mean of 19.5 would be (4) neither a sample mean of 8.6 nor of 17.5 would be plausible