1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Veseljchak [2.6K]
3 years ago
10

The authors of a paper titled "Age and Violent Content Labels Make Video Games Forbidden Fruits for Youth" carried out an experi

ment to determine if restrictive labels on video games actually increased the attractiveness of the game for young game players.
Participants read a description of a new video game and were asked how much they wanted to play the game. The description also included an age rating. Some participants read the description with an age restrictive label of 7+, indicating that the game was not appropriate for children under the age of 7. Others read the same description, but with an age restrictive label of 12+, 16+, or 18+.

The summary data shown below are the ratings of 12- to 13-year-old boys for how much they wanted to play the game on a scale of 1 to 10. You can assume that boys were assigned at random to one of the four age label treatments (7+, 12+, 16+, 18+) and that ratings were normally distributed.

Group Sample Size Sample Mean Sample Std Dev
7+ label 10 5.3 1.96
12+ label 10 7 1.55
16+ label 10 8.5 1.59
18+ label 10 8.2 1.59


(a) What is the sum of all observations in the data set? T =
Mathematics
1 answer:
o-na [289]3 years ago
7 0

Answer:

T = 290

Step-by-step explanation:

We can find the sum of all observations multiplying sample size (n) by sample mean (x).

Sum of all observations in the data set is,

T=n_{1} x_{1}+n_{2}x_{2}+n_{3}x_{3}+n_{4}x_{4}\\T=10(5.3)+10(7)+10(8.5)+10(8.2)\\T=53+70+85+82\\T=290

Hope this helps!

You might be interested in
Hi, please help me :)
bearhunter [10]

Answer:

D. Linear

The answer is negative linear, because when it incresing from 0 to 1 to 2 to 3 (year) it always deacreasing in the value($).

4 0
3 years ago
3/4 < ?/12 fill in the missing number
Lelechka [254]

Answer:

9

Step-by-step explanation:

12 / 4 = 3

3 x 3 = 9

3 0
3 years ago
There are two dogs for every three cats. That means there are 2/3 as many_____ as___ .
Fynjy0 [20]

Answer: There are two dogs for every three cats. That means there are 2/3 as many dogs as cats

Step-by-step explanation: I don't really know i'm just using my small brain. Sorry if it is wrong.

7 0
3 years ago
Read 2 more answers
What is 2inch converted into ft
abruzzese [7]
A Foot Is 12 Inches, There's No Way You Could Turn 2 Inches Into Feet
6 0
3 years ago
Read 2 more answers
The figure shows a net of a cube. Which expression can be used to find the total surface area of the cube?
sergij07 [2.7K]

Answer:

Option C: 6(7 * 7)

Step-by-step explanation:

There are six faces of the cube. Since each face is 7 by 7 units, there are 6(7 *7) units total.

6 0
1 year ago
Read 2 more answers
Other questions:
  • Triangle abc is an isosceles right triangle with right angle c what following statements are true
    15·1 answer
  • What is the number between 3400 and 4400
    14·2 answers
  • At age 51 Oscar set up a 401(k) where he plans to deposit $9000 at the beginning of each year until age 75 find the amount of th
    10·1 answer
  • Round 624.914 to the nearest hundredth.
    5·1 answer
  • If the value of a changes in response to the value of b then b is the _____?
    6·1 answer
  • According to the National Oceanic and Atmospheric Administration, the blue whale is the largest animal on Earth. Blue whales wei
    7·1 answer
  • Hey could someone please help me understand the question. Ill give brainliest.
    7·2 answers
  • Describe the steps to solve using the Quadratic Formula:
    11·1 answer
  • Let f(x) =x+5 and g(x)=x^2-3 then f(g(x)) =?
    6·1 answer
  • 1. Write a rule that will take the triangle to a congruent triangle. Write your rule as (x,y)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!