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2 years ago

Drag each tile to the correct box.

Mathematics

2 answers:

Umnica [9.8K]2 years ago

6 0

Answer:

Emma ⇒ IQR = 3.5

Sally ⇒ IQR = 3

Olivia ⇒ IQR = 2.5

Emma - Sally - Olivia

Step-by-step explanation:

Emma's Scores:

6 , 7 , 8 , 8 , 9 , 9 , 9 , 10 , 10 , 11 , 11 , 11 , 11 , 11 , 12 , 13 , 13 , 13 , 13 , 14

LQ = (9 + 9) ÷ 2 = 9

UQ = (12 + 13) ÷ 2 = 12.5

IQR = 12.5 - 9 = 3.5

Sally's Scores:

6 , 6 , 6 , 7 , 7 , 8 , 8 , 8 , 9 , 9 , 10 , 10 , 10 , 10 , 10 , 10 , 11 , 11 , 12 , 12 , 14

LQ = (7 + 8) ÷ 2 = 7.5

UQ = (10 + 11) ÷ 2 = 10.5

IQR = 10.5 - 7.5 = 3

Olivia's Scores:

6 , 6 , 7 , 7 , 7 , 8 , 8 , 8 , 8 , 9 , 9 , 9 , 9 , 9 , 10 , 10 , 12 , 12 , 13 , 14

LQ = (7 + 8) ÷ 2 = 7.5

UQ = (10 + 10) ÷ 2 = 10

IQR = 10 - 7.5 = 2.5

Emma - Sally - Olivia

puteri [66]2 years ago

3 0

Answer:

They all have the same IQR of 3.

Step-by-step explanation:

Emma's points:

median: 11

lower quartile: 9

upper quartile: 12

interquartile range: 12 - 9 = 3

Sally's points:

median: 9

lower quartile: 7

upper quartile: 10

interquartile range: 10 - 7 = 3

Olivia's points:

median: 9

lower quartile: 7

upper quartile: 10

interquartile range: 10 - 7 = 3

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Answer:

Mark needs 2 kg butter, 2 kg caster sugar, 14 eggs, and 1.5 kg flour.

Step-by-step explanation:

Alright, first you double the number of kids, as Mark wants each kid to have two cupcakes, not one. (Then add 80+80 to get 160)

Now add the adults to children: 160+152=312

now divide by 12 to see how many batches of cupcakes he needs to make.

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Now here are the ingredients needed to make 12 batches of cupcakes (I multiplied the amount of each ingredient by 26)

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now make the measurements the same as Mark's ingredients (or the other way around)

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90 eggs < 104 eggs

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Now do a little subtraction.....

5.2 kg-5 kg = 2 kg butter is needed....

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2 years ago

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Answer:

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b) The Variance of the number of questions that are answered correctly by either A or B = 2.25.

Step-by-step explanation:

Number of questions in the examination = 10

Probability of A's answer being correct = 0.7

Probability of B's answer being correct = 0.4

The expected number of questions that are answered correctly by both A and B:

Probability of Expected

Correct Answer Value Variance

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B 0.4 4 (0.4 * 10) 2.25

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Step-by-step explanation:

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2 years ago

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