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2 years ago

The dotplot shows the heights of 25 students in Mrs. Navard’s statistics class.

Mathematics

1 answer:

Zolol [24]2 years ago

4 0

Answer:

A)Percentile for Lynette, the student who is 65 in. tall is 36th

B) Asher is 22 inches tall.

Step-by-step explanation:

Percentile : It is a measure used in statistics indicating the value below which a given percentage of observations in a group of observations falls

A) Find the Percentile for Lynette, the student who is 65 in. tall.

No. of students below 65 inch =9

So, Percentage of data below 65 inch = $\frac{9}{25} \times 100 = 36 \%$

So, Percentile for Lynette, the student who is 65 in. tall is 36th

B)Ashers height is at the 88th percentile of the distribution. Interpret this value in context. How tall is Asher

$88=\frac{x}{25} \times 100 \\\frac{2200}{100}=x$

22=x

So, No. of students below or st 88th percentile = 22

So, Asher is 22 inches tall.

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The correct answer is the last one:

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Answer:

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Answer:

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There are 15 mini hotdogs and 5 mini pizza rolls in the combination meal.

Step-by-step explanation:

Given,

Calories in each hotdog = 80 calories

Calories in each mini pizza = 50 calories

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Combined calories = 1450 calories

Let,

x represent the number of hot dogs.

y represent the number of mini pizzas.

According to given statement;

x+y=20 Eqn 1

80x+50y=1450 Eqn 2

Multiplying Eqn 1 by 80

$80(x+y=20)\\80x+80y=1600\ \ \ Eqn\ 3$

Subtracting Eqn 2 from Eqn 3

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Dividing both sides by 30

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Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

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