Unit: Study design Quiz 3
Melissa is in the 7th grade. She wanted to know how after-school activities done on the week before an
exam affect the score of the exam. She asked all of her classmates to record their after-school activities on
the week before a big exam. Later, she compared the records with the achieved scores of each student.
What type of statistical study did Melissa use?

8

step-by-step explanation:

this is a subtraction problem.

10 - 2 = 8

understand that i don't know the answers

will someone answer his question

answer: 8d

step-by-step explanation:

45+5= 50+5=55+5=60

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12