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Ipatiy [6.2K]
3 years ago
7

In order to study whether IQ level is related to birth order, data were collected from a sample of 540 students on their birth o

rder (Oldest/In Between/Youngest) and their score on an IQ test.
Which of the following would be a meaningful display of the data from this study?

a. A pie chart
b. A histogram
c. A scatterplot
d. A two-way table
e. Side-by-side boxplots
Mathematics
1 answer:
Artist 52 [7]3 years ago
3 0

Answer:

correct answer is e. Side-by-side boxplots

Step-by-step explanation:

given data

IQ test

sample = 540 students

solution

here Side-by-side boxplots that is apply it to the data set with 1 quantitative and 1  categorical variable

Side-by-side boxplots is also very useful in the comparing fundamental information for 2 data set

eg median value and range of value they cover from data

and

Side-by-side boxplots also provide target summary and it analysis the data

so here correct answer is e. Side-by-side boxplots

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Viktor [21]

it is 20 because you have to do 4+4+6+6

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3 years ago
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(4x+7)^2=60 how to do extracting the square root?
4vir4ik [10]
(4x + 7)² = 60
(4x + 7)(4x + 7) = 60
(4x² + 28x + 28x + 49) = 60
4x² + 56x + 49 = 60
<u>                  -49   -49</u>
        4x² + 56x = 11
4x² + 56x - 11 = 11 - 11
4x² + 56x - 11 = 0
x = <u>-56 +/- √(56² - 4(4)(-11))</u>
                     2(4)
x = <u>-56 +/- √(3136 + 88)</u>
                     8
x = <u>-56 +/- √(3174)</u>
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x = <u>-56 +/- 56.34</u>
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x = -7 +/- 7.0425
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8 0
3 years ago
Keiko, Dale, and Tony sent a total of 95 text messages during the weekend. Dale sent 7 fewer messages than Kelko. Tony sent 4 ti
mylen [45]

Answer:

Keiko sent 17 messages, Dale sent 10 messages, and Tony sent 68 messages

Step-by-step explanation:

Let x represent the number of messages that Keiko sent.

Since Dale sent 7 less than Keiko, his number can be represented by x - 7

Since Tony sent 4 times as many as Keiko, his number can be represented by 4x

Using these variables, create an equation:

(x) + (x - 7) + (4x) = 95

Add like terms and solve for x:

6x - 7 = 95

6x = 102

x = 17

So, Keiko sent 17 messages.

Subtract 7 from this to find how many Dale sent:

17 - 7

= 10

Multiply it by 4 to find how many Tony sent:

17(4)

= 68

So, Keiko sent 17 messages, Dale sent 10 messages, and Tony sent 68 messages

4 0
2 years ago
(b) The globe has a radius of 28.5 cm. Find the surface area of the globe. Round your answer to two decimal places. Use:
damaskus [11]

Answer:

\boxed {\boxed {\sf  10,207.03 \ cm^2}}

Step-by-step explanation:

Surface area is the total area of the surface of an object. A globe is a sphere and the formula for calculating a sphere's surface area is:

SA= 4 \pi r^2

The radius (r) of the globe is 28.5 centimeters. Substitute this value into the formula.

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SA= 4 \pi ( 28.5 \ cm)^2

Solve the exponent. Multiply the number by itself.

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SA= 4 \pi (812.25 \ cm^2)

Multiply 4, pi and 812.25 centimeters together.

SA= 12.56637061  (812.25 \ cm^2)

SA= 10207.03453 \ cm^2

Round to two decimal place or the hundredth place. The 4 in the thousandth place to the right (10207.03453) tells us to leave the 3 in the hundredth place (10207.0<u>3</u>453).

SA \approx 10207.03 \ cm^2

The surface area of the globe is approximately <u>10,207.03 centimeters squared.</u>

3 0
2 years ago
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1. 12 1/4 = 49/4
2. 6 1/9 = 55/9
3. 5 3/4 = 23/4 = 46/8
5 0
1 year ago
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