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
Oduvanchick [21]
3 years ago
13

Nicole and Elena wanted to know if listening to music at a louder volume negatively impacts test performance. To investigate, th

ey recruited 30 volunteers and randomly assigned 10 volunteers to listen to music at 30 decibels, 10 volunteers to listen to music at 60 decibels, and 10 volunteers to listen to music at 90 decibels. While listening to the music, each student took a 10-question math test. Given is computer output from a least-squares regression analysis using = volume and = number correct.
Predictor Coef SE Coef T P
Constant 9.9000 0.7525 13.156 0.0000
Volume - 0.0483 0.0116 -4.163 0.0003

S = 1.55781 R-Sq = 38.2% R-Sq (adj) = 36.0%

What is the P-value of this test?
Interpret the P-value of this test.
Assuming the slope of the true regression line relating
y = performance on the 10-question math test to x = volume of the music is _______, there is a _____ probability of getting a sample slope of ________ by chance alone.
Mathematics
1 answer:
Illusion [34]3 years ago
7 0
Ok so first off if you want to find the valume to take the b and the h and multiply it by the edges then you get the answer hope this helps!!
You might be interested in
two angles are supplementary of the sum is 180. the larger angle measures four degrees more than sevem times the measure of a sm
Aleksandr [31]

Answer:

22 and 158

Step-by-step explanation:

Supplementary angles add to 180. This is means there is a small and large angle. Adding together, they make 180.

  • "the larger angle measures four degrees more than seven times the measure of a smaller angle" is represented as 7x+4.
  • "x represents the measure of the smaller angle" is represented as x.

x + 7x+4 =180

8x+4=180

8x=176

x= 22

This is the measure of the smaller angle. The larger angle is 7(22)+4 = 158

5 0
3 years ago
What's -5x – 10 = 10
Nikitich [7]
-5x-10=10   x= -4

Work:
-5x-10=10
     +10  +10
______________
-5x=20
_______
-5    -5

x=-4


3 0
3 years ago
Read 2 more answers
Which pair of events is dependent?
alexandr402 [8]
C; You know this because it asks for a dependent event. This means that a first event must occur that automatically changes the results for the following events. When you see dependent, look for without replacement.
5 0
3 years ago
Read 2 more answers
Sarah is selling bracelets and earrings to make money for summer vacation. The bracelets cost $2 and the earrings cost $3. She n
vivado [14]

Sarah is selling bracelets. The inequalities are a > 10 and 2a + 3b ≥ 60.

<u>Solution:</u>

Given, Sarah is selling bracelets and earrings to make money for summer vacation.  

bracelets cost = $2

earrings cost = $3  

She needs to make at least $60.  

Sarah knows she will sell more than 10 bracelets.  

We have to write inequalities

Now, according to given information,  

Total money ≥ $ 60

Money earned from bracelets + money earned by earrings ≥ 60

2 x number of bracelets + 3 x number of earrings ≥ 60

2a + 3b ≥ 60  

[ where a is number of bracelets and b is number of earrings]

And, number of bracelets is more than 10 ⇒ a > 10

Hence, the inequalities are a > 10 and 2a + 3b ≥ 60

4 0
3 years ago
1+ cos^4 x-sin^4 x = 2 cos² x​
Mariana [72]

\text{L.H.S}\\\\=1+ \cos^4 x - \sin^4 x\\\\=1+ (\cos^2 x)^2 - (\sin^2 x)^2\\\\=1+(\cos^2 x + \sin^2 x)(\cos^2 x- \sin^2 x)\\\\=1+1\cdot(\cos 2x)\\\\=1+\cos 2x\\\\=2\cos^2 x\\\\=\text{R.H.S}\\\\\text{Proved.}

7 0
2 years ago
Other questions:
  • What is the remainder when 3x^3-14x^2-14x+3 is divided by 3x + 5
    5·1 answer
  • -g-15 = -12. what does g equal to?​
    10·2 answers
  • HELP ME PLEASE! Use the properties of equality to finish solving the equation. 3 4 (20y − 8) + 5 = 1 2 y + 1 4 (20y + 8) 1. Dist
    6·2 answers
  • True or false division of whole numbers is commutative
    6·2 answers
  • Consider points A to F shown on the coordinate plane.
    10·2 answers
  • What is the area, in square feet, of the shape below? Express your answer as a fraction in simplest form.
    6·2 answers
  • How many toothpicks are needed to build the tree on day 100?​
    8·2 answers
  • What is mZN?<br> N<br> P<br> (4x + 36)<br> (6x - 2)°<br> M
    5·1 answer
  • Help me please! It'd mean so much!
    10·1 answer
  • Help plssssssssssssssssss
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!