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Korolek [52]
3 years ago
15

I need help solve for x ​

Mathematics
1 answer:
kirza4 [7]3 years ago
4 0

Answer:

Step-by-step explanation:

180-58=122

x=29

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two high school students took equivalent language tests, one in German and one in French. The student taking the German test, fo
dedylja [7]

Answer:

The student who did the German test scored 2 standard deviations above the mean and the student who did the French test scored 1.6 standard deviations above the mean. Relative to their classmates, the student who did the German test scored better due to the higher z-score.

Step-by-step explanation:

Z-score

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.

German test

Mean was 66 and the standard deviation was 8, scored an 82.

So

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

Z = \frac{82 - 66}{8}

Z = 2

French test:

Mean was 27 and the standard deviation was 5, scored a 35.

So

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

Z = \frac{35 - 27}{5}

Z = 1.6

The student who did the German test scored 2 standard deviations above the mean and the student who did the French test scored 1.6 standard deviations above the mean. Relative to their classmates, the student who did the German test scored better due to the higher z-score.

5 0
3 years ago
7k - 14 = 42<br> I need help solving this equation , can you help ?
qwelly [4]
7k-14= 42
+14 +14

7k= 56
————
7k 7

= 8
4 0
2 years ago
Read 2 more answers
4/5 + 3 + 5/6 + 5 + 2/3 how do you work this problem. ​
Sever21 [200]

Answer:

43/23 sana makatulong

Step-by-step explanation:

sana makatulong

6 0
2 years ago
In a race, Bethany is located -60 1/2 meters relative to her friend, Monica after 2 1/5 minutes. Assuming both girls are running
Alinara [238K]

Answer:

30.12.5

Step-by-step explanation:

happy ro help :))))

6 0
2 years ago
Help me please last one I need help with:)
Ivenika [448]
Since the length of this rectangle is 13 units and the width is 5 units, the area can be found this way:
A=l*w
A=13*5
A=65 so the third choice

Hope this helps!
8 0
3 years ago
Read 2 more answers
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