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slava [35]
3 years ago
13

A simple random sample of size n is defined to be a sample of size n chosen in such a way that every unit in the population has

the same chance of being selected. a sample of size , n, chosen in such a way that every unit in the population has the same chance of being selected. a sample of size n chosen in such a way that every unit in the population has a known nonzero chance of being selected. a sample of size , n, chosen in such a way that every unit in the population has a known nonzero chance of being selected. a sample of size n chosen in such a way that every set of n units in the population has an equal chance to be the sample actually selected. a sample of size , n, chosen in such a way that every set of , n, units in the population has an equal chance to be the sample actually selected. a sample of size n chosen in such a way that each selection is made independent of every other selection. a sample of size , n, chosen in such a way that each selection is made independent of every other selection. all of the above. They are essentially identical definitions. all of the above. They are essentially identical definitions.
Mathematics
1 answer:
Klio2033 [76]3 years ago
8 0

Answer: a sample of size n chosen in such a way that every unit in the population has the same chance of being selected

Step-by-step explanation:

A simple random sampling technique represents the most basic Sample representation or selection method with very less bias and it makes affords all observations an equal chance or probability of being a part of the selected sample. Hence, samples selected using this technique are regarded as being representative of the population or larger sample from which the sample was drawn. This is because sampling bias in a simple random variable is extremely minimal.

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Let red marbles = X.

The probability is 1 out of 5, written as 1/5

1/5 in terms of red marbles is equal to the number of red marbles divided by 5x, where 5x is the total number of marbles.

1/5 = x/5x 

Now you have 5x total marbles, x red and 4x blue. 

Add 5 more red and the new probability is: 

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Subtract 3x from both sides:

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Divide both sides by 2:

x = 10/2

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There were originally 5 red marbles.

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