Aresearcher performed an experiment with two groups. she found the difference of the means for each group. then she combined the groups, chose two new groups, and found the difference between the means of those new groups. she repeated this process 200 times. the normal distribution of the difference in the means she found is given below. how great would the difference in means between the first two groups have to be in order to considered significant? a) at least 7 b) at least 8 c) at least 9 d) at least 10 could someone explain it to me?

step-by-step explanation:

their are no angles. sorry cant .

(0,,,0)

step-by-step explanation:

the table of x and y values is shown in the attached pic(part of question)

we have to decide according that graph

given points are (0, 0) (–1, 0), (2, 0)

when we graph these points on graph they show an increasing line as shown in the attached pic

6

step-by-step explanation:

option (a)

step-by-step explanation:

step 1:   take 2 number whose product equal to 25..

and sum of those two number are -10

step: 2 for example here if we take 5,5 are the number,,

5*5=25

and

5+5=10

but we need -10

so if we take   -5,-5

so -5*-5=25

and -5+(-5)=-10

s0

come the equation

replace -10x by these number

like -5x -5x+25

take common

x(x-5)-5(x-5)=0

(x-5)(x-5)=0