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nekit [7.7K]
3 years ago
13

Mrs.gitterman gave a quiz to each of her three math classes. Each of her classes have 12 students. When she found the mean for e

ach class, she was surprised to see that the mean for each class was 80%. However looking at individuals scores, she found that the distribution of scores in each class looked very different.
Mathematics
2 answers:
kodGreya [7K]3 years ago
6 0

Answer:

4

Step-by-step explanation:

Ivahew [28]3 years ago
3 0

Answer:

4

Step-by-step explanation:

4

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We expect that students who do well on the midterm exam in a course will usually also do well on the final exam. Gary Smith of P
dybincka [34]

Using the model equation, the predicted mean score on the final given a score of <em>10 points above the class mean</em> in the mid term exam is 50.7

<u>The Least - Square Regression equation which models the relationship between midterm and final exam score is</u> :

  • γ=46.6 + 0.41x

x = 10 points ; <u>substitute the value of x = 10 into the regression equation</u> ;

γ=46.6 + 0.41(10)

γ=46.6 + 4.1

γ = 50.7

The <em>number of points above the mean</em> he'll score in the final exam is predicted to be 50.7

Learn more :brainly.com/question/18405415

7 0
3 years ago
Are congruent triangles also similar?
jonny [76]

Answer: yes they are

Step-by-step explanation:

If two pairs of corresponding angles in a pair of triangles are congruent, then the triangles are similar. We know this because if two angle pairs are the same, then the third pair must also be equal.

7 0
3 years ago
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andrey2020 [161]

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20

Step-by-step explanation:

20

8 0
2 years ago
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$900,000 is what percent of $900,000?
USPshnik [31]
What type of question is this
8 0
3 years ago
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Solve the expression (7th grade math):<br><br> -0.8m+3-12.5m+95.36m
Lana71 [14]

Step-by-step explanation:

<u>Combine Like-Terms:</u>

-0.8m + 3 - 12.5m + 95.36m

-13.3m + 3 + 95.36m

82.06m + 3

82.06m + 3 is your simplified expression.

7 0
2 years ago
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