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EleoNora [17]
3 years ago
9

Which of the following sample types should you always regard as unreliable? A) voluntary response samples 18) 9 simple random sa

mples B) stratified samples D) eluster samples 19) Statistics is the science of conducting studies to A) solve a system of equations
Mathematics
1 answer:
Inessa [10]3 years ago
4 0

Answer:

The type of sample that can be considered unreliable is type (a), in which responses are voluntary.

Step-by-step explanation:

The type of sample that can be considered unreliable is type (a), in which responses are voluntary.

It can be considered unreliable because being voluntary, the answers will give a biased result and the analysis will not be valid.

The rest of the options, if the necessary collections are taken, are samples that can be considered reliable.

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Three numbers have absolute values of 2,4 and 9. The product of all the numbers is positive.
Margaret [11]
The absolute value of a number is how far away it is from 0 on a number line.
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So basically. A positive number has the absolute value of itself. (2= a value of 2) and negative numbers have the absolute value of the positive form of that number. (-9= a value of 9)

Numbers that have the absolute value of 2: 2 and -2
Numbers that have the absolute value of 4: 4 and -4
Numbers that have the absolute value of 9: 9 and -9

You are looking to add your numbers together to make a positive.

So the answer is the positive answers to the absolute values: 2,4,9

2+4+9=15

15 is a positive number.
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3 years ago
Which statement is true about the coordinates of points A and B?
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Answer:

the 4th imagen math box

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3 0
3 years ago
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How many points need to be removed from this graph so that it will be a function?
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a store marks up their merchandise by 70%. a customer buys a lampshade for $17.00, a rug for $88.40, a sculpture for $47.60, and
mart [117]

Answer:

$76.50

Step-by-step explanation:

17.00 + 88.40 = 105.40

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