Please I need help I can’t get a bad grade I try my best but I don’t understand

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

3 0

Answer: What do you need, what grade are you in?

Step-by-step explanation:

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The box-and-whisker plots show data for the test scores of four groups of students in the same class. Which plot represents data

bixtya [17]

Answer:

The answer is B.

Step-by-step explanation:

7 0

3 years ago

I think it’s b but I’m not sure

laila [671]

No, its D

Just look at the rounds mentioned and subtract the scores from higher round with lower round.

Look at A: round 2 score - round 1 score = -2?
-3 -1 = -4 change, not -2 change so it is wrong

Look at B: round 3 score - round 1 score =-1?
-2-1 =-3 change, not -1 change so it is wrong

Look at C: round 3 score - round 2 score =-1?
-2 -(-3) = 1 change, not -1 change so it is wrong

Look at D: round 3 score - round 1 score =-3?
-2-1 = -3 change, matches with -3 so it is correct.

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2 years ago

In a random sample of 5 residents of the state of Texas, the mean waste recycled per person per day was 1.9 pounds with a standa

sammy [17]

<h2>Answer with explanation:</h2><h2 />

The confidence interval for population mean is given by :-

$\overline{x} \pm\ t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$