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klio [65]
3 years ago
7

I need help with school

Mathematics
1 answer:
Nesterboy [21]3 years ago
3 0

I’m really sorry about the other persons rudeness.

0.5 would be the answer because you are starting at 1 1/3 and moving 5/6 to the left

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GIVING OUT FREE BRAINLIEST!!!!!!!!!!!!!!!!
Karolina [17]

Answer:

6 is the answer hope it helps:)

4 0
2 years ago
Read 2 more answers
Suppose your statistics professor reports test grades as​ z-scores, and you got a score of 2.49 on an exam. ​(a) Write a sentenc
Oduvanchick [21]

Answer:

a) A z-score of 2.49 means that your grade was 2.49 standard deviations above the mean of all grades.

b) 1.39% of the class scored lower than your​ friend.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

You got a score of 2.49 on an exam. ​

(a) Write a sentence explaining what that means

A z-score of 2.49 means that your grade was 2.49 standard deviations above the mean of all grades.

(b) Your friend got a​ z-score of negative 2−2. If the grades satisfy the Nearly Normal​ Condition, about what percent of the class scored lower than your​ friend? ​

This percentage is the pvalue of Z = -2.2

So 0.0139 = 1.39% of the class scored lower than your​ friend.

7 0
3 years ago
What is the mean of the data displayed in the line plot below?
Ira Lisetskai [31]

The mean is the average.

Total the numbers and divide by the quantity of numbers.

2 +2 + 3 + 3 +4 +4 +4 +5 +5 +5 +5 + 6 = 48

48 / 12 = 4

The answer is B.4

8 0
3 years ago
Which are correct representations of the inequality –3(2x – 5) < 5(2 – x)? Check all that apply.
Katyanochek1 [597]

The correct answer is –6x + 15 < 10 – 5x.

We can tell this by solving for x.

–3(2x – 5) < 5(2 – x) ----> Multiply to the parenthesis.

-6x + 15 < 10 - 5x ----> This is answer #3 and now we add 5x to both sides

-x + 15 < 10 ----> subtract 15 from both sides

-x < -5 ----> Divide by -1

x > 5 (Note that you have to change the direction of the sign when dividing by a -1. Therefore it does not match answer #1).

5 0
3 years ago
1/4 times 24 times 2/3
Strike441 [17]
24(1/4)= 6

6(2/3)= 12/3= 4

The answer is 4. Hope this helps!
6 0
3 years ago
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