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
densk [106]
3 years ago
9

The next two questions (Questions 7 and 8) refer to the following information: A Canadian study measuring depression level in te

ens (as reported in the Journal of Adolescence, vol. 25, 2002) randomly sampled 112 male teens and 101 female teens, and scored them on a common depression scale (higher score representing more depression). The researchers suspected that the mean depression score for male teens is higher than for female teens, and wanted to check whether data would support this hypothesis. If μ1 and μ2 represent the mean depression score for male teens and female teens respectively, which of the following is the appropriate pair of hypotheses in this case? (i) H0: μ1−μ2=0 Ha: μ1−μ2<0 (ii) H0: μ1−μ2>0 Ha: μ1−μ2=0 (iii) H0: μ1=μ2 Ha: μ1>μ2 (iv) H0: μ1−μ2=0 Ha: μ1−μ2>0 (v) Both (iii) and (iv) are correct.
Mathematics
1 answer:
Sav [38]3 years ago
6 0

Answer:

v- Both (iii) and (iv) are correct

Step-by-step explanation:

You might be interested in
What is a verbal expression for 15+ r
frosja888 [35]
The sum of 15 and r.
Sum is the term used in verbal addition problems. 
This is an expression therefore, you do not state what it equals. We no this because there is no equals sign.

5 0
3 years ago
The y-intercept in the linear equation y = -1/10x – 2 is_[blank]
shtirl [24]
The y - intercept is -2
5 0
2 years ago
Read 2 more answers
Please help me, it's a multi-step problem
Vika [28.1K]

Answer:

The first part is B= -2t + 95.

Step-by-step explanation:

Every hour the battery drops by 2 so the equation is

current battery charge= (time)(-2)+(starting battery charge)

3 0
2 years ago
What is 20% of 80 I need help
Pie

Answer:

16

Step-by-step explanation:

20% = 0.2

80 x 0.2 = 16

Please mark me Brainliest :)

3 0
2 years ago
Read 2 more answers
Factor completely 3x^2+9x-3<br>3(x^2+3)<br>3(x^2+3-1)<br>3x(x^2+3x-1)<br>prime​
Firdavs [7]

Answer:

Answer from the answer data to choose from

<h2>3(x² + 3x - 1)</h2>

Factor completely

3\left(x+\dfrac{3-\sqrt{13}}{2}\right)\left(x+\dfrac{3+\sqrt{13}}{2}\right)

Step-by-step explanation:

3x^2+9x-3=(3)(x^2)+(3)(3x)-(3)(1)\\\\=(3)(x^2+3x-1)\\\\\text{For}\ x^2+3x-1\ \text{use the quadratic formula}\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x^2+3x-1\to a=1,\ b=3,\ c=-1\\\\x=\dfrac{-3\pm\sqrt{3^2-4(1)(-1)}}{2(1)}=\dfrac{-3\pm\sqrt{9+4}}{2}=\dfrac{-3\pm\sqrt{13}}{2}=-\dfrac{3\pm\sqrt{13}}{2}\\\\3x^2+9x-3=3\left(x+\dfrac{3-\sqrt{13}}{2}\right)\left(x+\dfrac{3+\sqrt{13}}{2}\right)

4 0
3 years ago
Other questions:
  • Convert 22.6 square centimeters to square inches ( to the nearest hundredth).
    11·2 answers
  • Cube with surface area=294 yd^2
    7·1 answer
  • Liz has 72 stamps in her stamp collection. Risa, who just started her collection, has 9 stamps. Liz’s collection is how many tim
    13·2 answers
  • What is this answer i need to know please and how you figured it out?
    7·2 answers
  • What percent of 56 is 8?​
    11·1 answer
  • Solve the following system of equations graphically.
    12·1 answer
  • NEED HELP.
    6·2 answers
  • 5. A line crosses through the points (0, 2) and
    7·1 answer
  • Hi, may someone help me on this plz
    11·1 answer
  • Find value of 2x+2y if x+2y = 6 and x+y = 10
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!