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Olegator [25]
3 years ago
15

Twenty students in Class A and 20 students in Class B were asked how many hours they took to prepare for an exam. The data sets

represent their answers.
Class A: {2, 5, 7, 6, 4, 3, 8, 7, 4, 5, 7, 6, 3, 5, 4, 2, 4, 6, 3, 5}
Class B: {3, 7, 6, 4, 3, 2, 4, 5, 6, 7, 2, 2, 2, 3, 4, 5, 2, 2, 5, 6}

Which statement is true for the data sets?

A.) The mean study time of students in Class A is less than students in Class B.
B.) The mean study time of students in Class B is less than students in Class A.
C.) The median study time of students in Class B is greater than students in Class A.
D.) The range of study time of students in Class A is less than students in Class B.
E.) The mean and median study time of students in Class A and Class B is equal.
Mathematics
2 answers:
nydimaria [60]3 years ago
3 0
"The mean study time of students in Class B is less than students in Class A" is the statement among the following choices given in the question that is true for the data sets. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer helped you.
stira [4]3 years ago
3 0

Answer: B) B.  

The mean study time of students in Class B is less than students in Class A.

Step-by-step explanation: plato web

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How do you decide by which power of 10 to multiply an equation when writing a decimal with repeating digits as a fraction?
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For the repeating fraction, It depends on the denominator as which power of 10 is the nearest factor of denominator.

According to the statement

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Fraction is a number expressed as a quotient, in which a numerator is divided by a denominator. In a simple fraction, both are integers.

So, From the given information:

To decide the power of 10 to multiply an equation with repeating digits ; Round the equation to the required significant numbers.

when the numerator of an equation is divided by the denominator and the result is not a whole number ( i.e. number with some decimals)and sometimes the decimal places are unending. to present the result properly we have to round off the number to the nearest significant number, then you can multiply  the equation with the power of 10, in relation to the number of significant places you rounded off.

Example :

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To express this answer with the power of 10

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Here the power of 10 is -2.

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y + (108-12) = 180

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The theoretical probability =\dfrac{5}{9},  The experimental probability  = \dfrac{5}{12}

<h3>What is experimental probability?</h3>

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The sample will be ={1,2,3,4,5,6,7,8,9}=9

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