Test for equality of means based on the data in Exercise 14.2. Take a = .05.

Data from in Exercise 14.2

Subjects must press a button when they h ear a signal. The three treatments are three different intensities of the signal. The time elapsed between presentation of the signal and when the button is pushed, are recorded in hundredths of a second. Suppose the data are

Treatment 123 3 33 20 23 Observations 22 15 17 26 15 21 19 14 15