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Marina86 [1]
3 years ago
10

Which must be true of a random sample ?

Mathematics
2 answers:
Paha777 [63]3 years ago
8 0
What you are testing
avanturin [10]3 years ago
6 0

A simple random sample is chosen in such a way that every set of individuals has an equal chance to be in the selected sample. It sounds easy, but SRS is often difficult to employ in surveys or experiments.

Therefore other sampling methods would probably be better suited to that particular experiment

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Anna went to the grocery store. She bought 3 oranges and 6 apples. She paid $4.50. Maria went to the same store and bought 2 ora
klemol [59]

Answer: The apple costs 0.45

Step-by-step explanation: Oranges will be x in our equations and Apples will be y.

Anna's equation is: 3x + 6y = 4.5 (1)

Maria's equation is: 2x + 2y = 2.1 (2)

As we need to find y, we need to cancel x, this way, we multiply equation (1) by 2 and equation (2) by 3.

3x + 6y = 4.5 (x2)

2x + 2y = 2.1 (x3)

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6x + 12y = 9

6x + 6y = 6.3

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Now, we subtract them

6x + 12y = 9

-6x - 6y = -6.3

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6y = 2.7 → y = 2.7/6 → y = 0.45

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3 years ago
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IgorLugansk [536]

Answer:

16a^7 b ^14

Step-by-step explanation:

7 0
3 years ago
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lana [24]

Step-by-step explanation:

log(7x³/z) = log(7) + log(x³) - log(z).

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3 years ago
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Angela has 3 gallons of milk.how many quarts of milk dose she have
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Answer:

12

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4 quest make 1 gallon so 4*3=12

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Oksi-84 [34.3K]

Answer:

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Step-by-step explanation:

trapezoid formula : A= 1/2h(B+b)

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3 years ago
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