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.

answer: i oofed

step-by-step explanation:

oofed=wow

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "