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
marissa [1.9K]
3 years ago
6

The leader of two postpartum women’s support groups is interested in the depression levels of the women in her groups. She admin

isters the Center for Epidemiologic Studies Depression Scale (CES-D) screening test to the members of her groups. The CES-D is a 20-question self-test that measures depressive feelings and behaviors during the previous week.
The mean depression level from the screening test for the 6 women in the first group is μ1= 16; the mean depression level for the 10 women in the second group is μ2=12.

Without calculating the weighted mean for the combined group, you know that the weighted mean is:

a. Midway between 16 and 12
b. Closer to 16 than to 12
c. Closer to 12 than to 16
Mathematics
1 answer:
Sedbober [7]3 years ago
7 0

Answer:

The answer is "Option a".

Step-by-step explanation:

\text{Weighted mean} = \frac{(6\times 16+10 \times 12)}{16}

                         = \frac{( 96 +120)}{16}\\\\ = \frac{(216)}{16}\\\\ =  13.5

\text{Weighted mean} = \frac{( 6\times 18+10\times 14)}{16}

                        = \frac{( 6\times 18 +10\times 14)}{16}\\\\= \frac{( 108+140)}{16}\\\\= \frac{( 248)}{16}\\\\= 15.5

You might be interested in
St. Patrick's Day Problem Solving
yaroslaw [1]

Answer:

I dont know wow this is hard i think it is 151 but im not sure

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
2x+3y=11, solve for y
lesya [120]
Hope it helps with your work

4 0
3 years ago
Read 2 more answers
What is the length of the side labeled x cm?
UkoKoshka [18]
When we know 2 angles and one side, we use the Law of Sines.
First we need to find that third angle.
Angle A =
180 -41 -62 = 77 degrees

The Law of Sines states that

side a / Sine (A) = side x / Sine (X)
14 / Sine (77) = side x / Sine (41)

14 * Sine (41) / Sine (77) = side x

side x = 14 * 0.65606 / 0.97437
<span>side x = 9.18484 / 0.97437
</span>
<span> <span> <span> side x = 9.4264396482 </span> </span> </span> 









5 0
3 years ago
Select the correct answer. Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% ch
GREYUIT [131]

Answer:

Option A 0.1698

Step-by-step explanation:

Given that Jason has a chance for getting oil as 45%

THe kit he buys show accurate result with 80% probability

Let A1- Event that the land has oil

A2 - Event that the land has no oil

B- The test gives negative result

A1 and A2 are mutually exclusive and exhaustive

P(A1) = 0.45 and P(A2) =0.55

Hence we can use Baye theorem

Then P(B) = P(A1B)+P(A2B)=0.45(0.20)+0.55(0,80)\\=0.09+0.0.44\\=0.53

Reqd prob =P(A1/B) =

\frac{P(A1B)}{P(B)}\\ =\frac{0.09}{0.53}\\\\=0.1698

3 0
2 years ago
1.<br> Solve.<br> 6x + 10 = 22<br> 2.<br> Solve.<br> 6x - 4 = 4x<br> What is the answers
Diano4ka-milaya [45]
1) x= 2
6x2+10=22
2) x = 2
6x2-4=4x2
3 0
3 years ago
Other questions:
  • Could anyone help me with this question? And could you also provide a explanation? I would be so grateful for any help.
    10·1 answer
  • How do I solve numbers 3 and 4? What’s the answer?
    10·1 answer
  • Which expression is equivalent to (64y^100)^1/2
    6·1 answer
  • Simplify. Rewrite the expression in the form b^n. b^10/b^6
    8·2 answers
  • How many times does 58 go into 556
    12·2 answers
  • Determine if they are similar, congruent or neither
    5·1 answer
  • Solve the following system of equations by substitution and select the correct answer below: 4x − 6y = 28 8x − 4y = 24
    7·2 answers
  • The value of a school bus reduces from $512000 to $343000in 3 years. Find the
    5·1 answer
  • Please help with test offering big points pt 4
    13·1 answer
  • Someone please help me ASAP because I am really stuck thank uuuuu!!!!!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!