A game developer for ShapeExplosion is really interested in how music affects peoples ability to complete the game. He wanted some to listen to soft music, others to listen to hard rock and others none at all. The game developer is also interested in how people interact with the software using a mouse or touch pad. He sets up an experiment to test how these variables affect time to completion.

uppose that you had 60 participants and these participants were divided evenly between the treatments. How many replications would you have?

I would have 6 teams with 10 people in each group.

Step-by-step explanation:

If you are trying to divide them equally you would try to find an equation that would equal 60. The equation that I went with was 6x10=60 but you can chose a different equation if you would like.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.