b) If Marta’s experiment used an alpha of 0.05 and a beta of 0.07, what is the power of Marta’s experiment?

can i know which language is this?

the correct answer is b.

this is because an open circle means < or > & since the line goes left it is < -3.

the next one has a filled circle so it can only be ≥ or ≤ and since the line goes right from 1 it is ≥ 1

hope that

48+y= ?

the y is the variable and the ? could also be a variable