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irinina [24]
3 years ago
7

Zoe is doing a survey to find the time her classmates spend playing video games. She asks the following question:

Mathematics
2 answers:
Vladimir [108]3 years ago
7 0
The data she would collect would be grouping people depending on how much video games they played. 

This however, is not a statistical question. Instead, she should set for example: 1-3 hrs per week, 4-6 hrs, etc. People play different amounts of hours, and so you cannot set a specific number, it must be a "range-of-numbers".

Also the question itself is kinda judging and comparative

so overall, umm... this question isn't really good

hope this helps :D
brilliants [131]3 years ago
7 0

Answer:

A) It is expected that she collects data in a table like follows:

hours played weekly | number of students

0                                  | 2

1                                   | 3

2                                  | 5

...                                  | ...

B) The question is not a statistical question because a single answer is expected. A statistical question would be <em>How many hours do students spend playing video games? </em> and the answer would be the average of the previously collected data.

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What is the speed (approximately) of a 2.5-kilogram mass after it has fallen freely from rest through a distance of 12 meters?
Norma-Jean [14]

Answer:

15.3 m/s

Step-by-step explanation:1) Find the gravitational potential energy using the equation :

     PE_g=mgh

    PE_g=2.5(12)(9.8)\\PE_g=294

2) Then use the equation for kinetic energy to solve for the velocity:

     KE=\frac{1}{2} mv^{2}

     294=\frac{1}{2}(2.5)(v^2)\\235.2=v^2\\\sqrt{235.2} =v\\15.3 m/s=v

6 0
3 years ago
Sushilis now 4 times as old as Sunil. 5 years ago Sushilwas 7 times as old as Sunil was then. Find the present ages of each of t
Illusion [34]

Answer:

Sunil = 10 and Sushil= 40

Step-by-step explanation:

Present ages-

Sushil= 4x

Sunil= x

5 years ago-

Sushil = 4x - 5

Sunil = x - 5

4x - 5 = 7(x - 5) = 4x - 5 = 7x - 35

                        = -5 = 3x - 35

                        = 30 = 3x

                        = 10 = x

So substitute the xs for 10-

Present Sushil= 4 x 10 = 40

Present Sunil= 10

6 0
3 years ago
What is 90,000,000,000 in word format
My name is Ann [436]
The answer I believe would be ninety millionth
4 0
3 years ago
Read 2 more answers
Can anyone help me???????????
sleet_krkn [62]

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5 0
3 years ago
Which step has the mistake in solving for roots?
REY [17]

Answer:

Step-by-step explanation:

2x² - 7x - 3 = 1

Step 1: 2x² - 7x - 4 = 0

Step 2: incorrect.

Use Quadratic Formula to solve for roots.

x = [7 ± √(7² – 4·2(-4))] / [2·2]

 = [7 ± √81] / 4

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7 0
3 years ago
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