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Vadim26 [7]
3 years ago
5

Helpppppp meeeeee plzzz

Mathematics
1 answer:
mafiozo [28]3 years ago
6 0

group1 a = 0.25

group1 b = 0.75


group2 a = 0.44

group2 b = 0.56

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Select the correct answer.
antoniya [11.8K]

Answer:

B

Step-by-step explanation:

No solutions

8 0
4 years ago
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A set of data has a normal distribution with a mean of 50and a standard deviation of 8. What percent of the data should be less
meriva

50% of data will be less than 50

Step-by-step explanation:

A normal distribution has the shape of the graph like a bell.

Given

Mean=50\\SD = 8

we have to find how much data will be less than 50.

So we have to calculate z-score for 50.

z-score=\frac{x-Mean}{SD}\\=\frac{50-50}{8}=0

The z-score is zero. As we have to find the number of values less than 50 we will find the area to the left of curve

P(z

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Keywords: Probability, Area under the curve

Learn more about z-score at:

  • brainly.com/question/10940255
  • brainly.com/question/10941043

#LearnwithBrainly

6 0
3 years ago
How do u find perimeter. and i dont know how to determine the two expression
olga_2 [115]
Perimeter is when you add the outside of a shape.
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6 0
3 years ago
To increase an amount by 5.4%, what single multiplier would you use?
BaLLatris [955]
I think that the answer is ( 4.5) !!


6 0
4 years ago
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Yakvenalex [24]
Based on the given fractions above which are 7/8 and 42/4, in order for us to know if they are both proportional is to do the cross multiplication. Let's say, we multiply 4 by 7 and we get 28. Divide 28 by 8 and the result is 3.5 and not 42. Therefore, we can say that these fractions are NOT proportional. Hope this helps.
6 0
4 years ago
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