Aresearcher measures the time (in seconds) it takes a sample of five participants to complete a memory task. it took four of the participants 7, 8, 8, and 9 seconds. if m = 9, then what must be the fifth time recorded?

1.41 seconds

Step-by-step explanation:

The question did not specify what M = 9 signifies. To solve the question, it is assumed that M = 9 is the mean.

The mean of the time for the 5 participants is given as 9  

        Arithmetic mean(X)

There are five participants who completed the memory task, hence, n = 5. The formula for mean now becomes;

        Arithmetic mean(X)

                             9

                              32 = 45

                              =

                              = 1.41 seconds

The fifth time recorded is 1.41 seconds.

step-by-step explanation:

this woman was an important writer and propagandist during the american revolution. she was a member of the committee of correspondence (in fact the committee was formed in her home) and was an advisor to many of the revolutionary leaders, including george washington and john adams. who was this revolutionary woman?