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Solnce55 [7]
2 years ago
10

PLEASE HELP!

Mathematics
2 answers:
kifflom [539]2 years ago
6 0

Answer:

Here you go hope its not too late

Step-by-step explanation:

anygoal [31]2 years ago
5 0

Answer:

x = 6

Step-by-step explanation:

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andrew11 [14]
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8 0
3 years ago
Suppose the test scores on an exam show a normal distribution with a mean of 82 and a standard deviation of
Zanzabum

Answer:

a) Between 74 and 90

b) 81.86% of the scores are between 78 and 90

Step-by-step explanation:

a) According to the Empirical Rule, in a normal distribution, 95% of the data are within 2 standard deviations of the mean. Therefore, the range that 95% of the scores fall in is between 82-4(2)=74 and 82+4(2)=90.

b) The percent of scores that are between 78 and 90 is: normalcdf(lower,upper,μ,σ) = normalcdf(78,90,82,4) = 0.8185946784 ≈ 0.8186, or about 81.86% of the scores.

5 0
2 years ago
Select all the correct answers.
alina1380 [7]

sorry i just want some points :)

3 0
2 years ago
Write and solve an equation to find the number n. The difference of three times a number and 4 is -19.
Law Incorporation [45]

Answer:

-5

Step-by-step explanation:

Let n be the unknown number

difference is subtraction

3n -4 = -19

Add 4 to each side

3n-4+4 = -19+4

3n = -15

Divide by 3

3n/3 = -15/3

n = -5

4 0
3 years ago
What is a division problem that has the answer 6?? 8th grade
nika2105 [10]
18/3=6
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36/6=6
3 0
2 years ago
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