Answer:
The mean is 50
Step-by-step explanation:
To find the mean, add up all the numbers and divide by the number of numbers
(35+ 40+ 56+ 52+ 67)/5
250/5
50
Your final answer is going to be 4r + 3r ^2 +7
Answer:
x ≥ 7
Step-by-step explanation:
multiply both sides of the equation by 4
2x - 6
4 × ---------- ≥ 2 × 4
4
2x - 6 ≥ 8
2x ≥ 8 + 6
2x ≥ 14
2x 14
-------- ≥ ---------
2 2
x ≥ 7
Are the lines horizontal, diagonal or vertical
Answer:
(d) a matched pairs experiment.
Step-by-step explanation:
The correct answer is option D that is d) a matched pairs experiment.
A matched pair experiment is special case of randomize block design. This experiment can be used when the statement has two treatment conditions and subjects are grouped into pair based on some treatment. For each pair, random treatments are assigned to the subjects. It is an improvement over complete randomized design.
This is an experiment because a treatment (the MP3 players) was assigned to different members of the sample(the assembly line workers) randomly.