Which type of parametric test should you run if you wanted to investigate the effect of antidepressants by giving one group of people an antidepressant and another group of people a placebo?

a. One-sample t-test
b. z-test
c. Related-samples t-test
d. Independent-samples t-test

Answers

Answer 1

Answer:

d. Independent-samples t-test

Step-by-step explanation:

The independent samples t-test can be described as a test under which two groups are compared on the mean value of a continuous normally distributed variable.

The independent samples t-test model is based on the assumption that the mean score of the dependent variable is different because the of the impact of the independent variable that differentiates the two groups.

The independent-samples t-test is also known as a parametric test in which the means of two independent groups are compared with the aim of ascertaining if there is statistical evidence that the associated population means are significantly different.

In this question, there are two independent groups which we intend to compare in order to investigate the effect of antidepressants. The first group is the group of people given antidepressant, while the second is another group of people that is given a placebo. This is a perfect example of independent-samples t-test.

Therefore, the correct option is d. Independent-samples t-test. That is, the type of parametric test that should be run in order to investigate the effect of antidepressants by giving one group of people an antidepressant and another group of people a placebo.


Related Questions

joyce only gets 5.5%commission on sales greater than $2000 per month. If she sold $2300, what commission did she earn? A. 82.21 B. 16.5 C. 144 D. zero​

Answers

Answer:

$16.50

Step-by-step explanation:

$300 x .055 = $16.50

A game uses a single 6-sided die.

To play the game, the die is rolled one time, with the following results:

Even number = lose $10
1 or 3 = win $3
5 = win $8

What is the expected value of the game?

Answers

45$ since there are 3 even numbers so 3x10= 30 and 1&3= 6 1 five which is 8. Now we add 30+6+8

What’s two fifths/one sixth? Fractions

Answers

Answer:

The answer is 2/5 i think

Step-by-step explanation:

hope that helps!

HELP ME FIND SLOPE RATE CHANGE WILL GIVE BRAINLIEST

Answers

Answer:

1. RS= slope of 5/2

2. Pt= slope of -6/1 or -6

3.PQ= slope of 1/5

4. TS=slope of 0

5. QR= slope of -1/2

Step-by-step explanation:

Rise / run then simplify

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Answers

My favorite song is Make a Wish by NCT U

[Intro]

Oh, ayy

Oh, yeah

[Verse 1]

See you looking right here, don't hesitate (Yeah)

Fully booked up for you, I squeeze in a date (Yeah)

Girl, you got me excited, I wanna play (Ooh)

It’s like I been at sea, the way I been on a wave

(Ayy, ayy, ayy, ayy)

I want you to come join me (Join me)

Swimmin' in the money like royalty

She said, "Baby, you don't have to spoil me"

She just want me to spoil her with loyalty

[Refrain]

Sweet tooth, I eat all of the Skittles

I like my donuts with jam in the middle

You’re a great example of what I'm into

I was thinking we could jam for a little, yeah

[Pre-Chorus]

You'rе all that I want

Let me show what I'm on

[Chorus]

I can do this all night

Back it up, back it up (Yeah)

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Girl, you're lit, there ain't no one finer

One in a milli', yeah, you light the fire

Before I change my mind

It's your birthday, make a wish

[Post-Chorus]

Ooh, you should make a wish

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Let me do it for you

[Verse 2]

Never take a break, you always workin' overtime

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That's why it's funny when you’re calling me a (Star)

You're my sugar rush, you really got me (Charged)

Really got me charged, you star

[Refrain]

Sweet tooth, I know how to nibble

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[Pre-Chorus]

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Let me show what I'm on

[Chorus]

I can do this all night

Back it up, back it up (Back it up on me)

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[Bridge]

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Now make a wish

Girl, you're lit, there ain't no one finer

One in a milli', yeah, you light the fire (Ooh)

Before I change my mind

It's your birthday, make a wish

[Chorus]

I can do this all night

Back it up, back it up

Yeah, girl, you just my type

We should match it up, match it up (We should)

Girl, you're lit, there ain't no one finer

One in a milli', yeah, you light the fire

Before I change my mind (Yeah)

It's your birthday, make a wish

[Outro]

Yeah, make a wish

(It's your birthday, it's your)

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(I'll give you birthday cake)

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It's your birthday

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Now make a wish

Answer:

I ran me up a check

And then my pockets started bragging

Can't let you waste my time

So if you want to talk I'm taxing

But I can't help it, it's just my attitude

My attitude, my attitude

My attitude

My attitude, my attitude

My attitude

My attitude, my attitude

I don't know, I just can't help it

Man, I guess that just my attitude

if the ball move 4 yards in one direction and then 4 yards in the opposite direction ,where is the final position of the ball

Answers

the starting point or wherever it started

PLEASE HELP I SUCK AT MATH

Answers

The answer to the question is B. [tex]y=4x[/tex]

[tex]4(2)=8\\4(3)=12\\4(4)=16\\4(5)=20[/tex]

(5x + 4) + (-8x - 2)

Answers

Answer:

-3x + 2

Step-by-step explanation:

(5x + 4) + (-8x - 2)

= 5x + 4 -8x - 2

combine like terms

-3x + 2

How will increasing the level of confidence without changing the sample size affect the width of a confidence interval for a population mean?

Answers

Answer:

The width of the confidence interval is going to be wider

Step-by-step explanation:

When we Increase the level of confidence without changing the sample size the width of the confidence interval is going to be affected in the following way;

The margin of error (M.E) is going to be larger or be increased. This increase is due to the fact that the critical value is going to increase. Then the increased margin of error would cause the width of the confidence interval to become wider.

This answers your question.

Solve 48 = -8r!!!help pleaseeeee

Answers

Answer:

D

Step-by-step explanation:

Please help me I am confused

Answers

The answer is c...

y = mx + b is slope intercept form

This equation corresponds to that...

to be in slope intercept form:

y = mx + b is corresponded to y = 4x + 9

Answers c!!!!!!::::::::::)))))

Which expression is equivalent to 5y^-3

Answers

Answer:

5 /y^3

Step-by-step explanation:

PLLLLLLEEEEEEEEZZZZZZZZZ AAAAAANNNNSSSSSEEEEERRRRRR will give brainlist! One million dollars! A megayacht! FIVE STARS!
Plot 1 goes from 0 to 8. There are 2 images above 5, 2 above 6, 4 above 7, and 5 above 8. Plot 2 goes from 0 to 8. there are 5 images above 1, 2 images above 2, 4 images above 3, 3 images above 4, 1 image above 5, 1 image above 6, and 1 image above 8.
Use visual clues to decide which plot has the highest measure. No calculations should be necessary, although you may use them to verify your answers.

Highest mean:
Highest median:
Highest range:
Highest interquartile ranges:

Answers

Answer:

Highest mean:  

✔ Plot 1

Highest median:  

✔ Plot 1

Highest range:  

✔ Plot 2

Highest interquartile ranges:  

✔ Plot 2

Step-by-step explanation:

Answer:

Highest mean:  

✔ Plot 1

Highest median:  

✔ Plot 1

Highest range:  

✔ Plot 2

Highest interquartile ranges:  

✔ Plot 2

A company manufactures batteries in batches of 26 and there is a 3% rate of defects. Find the standard deviation for the number of defects per batch.

Answers

Answer:

The standard deviation for the number of defects per batch is 0.87.

Step-by-step explanation:

Let X denote the number of defective batteries per batch.

A company manufactures batteries in batches of n = 26.

It is provided that the rate of defects is, p = 0.03.

Each battery is defective independently of the others.

The random variable X follows a binomial distribution.

The standard deviation of a binomial distribution is:

[tex]\sigma=\sqrt{np(1-p)}[/tex]

Compute the standard deviation for the number of defects per batch as follows:

[tex]\sigma=\sqrt{np(1-p)}[/tex]

  [tex]=\sqrt{26\times 0.03\times (1-0.03)}\\\\=0.86982757\\\\\approx 0.87[/tex]

Thus, the standard deviation for the number of defects per batch is 0.87.

I need help with whole thing teacher is putting pressure on me and I have a 10 in her class

Answers

Answer:

So... for problem 15. im gonna help you and maybe you'll understand how to do it:) So the X axis is the horizontal line and the Y axis is the vertical line.

So when it says X -4

                          Y 5

Then the point would be at -4 on the horizontal line and 5 positive points on the Y axis (vertical line)

Step-by-step explanation:

I really hope this helps you its hard to describe over type:(

Good luck:))

plz help me show your work​

Answers

Answer:

Step-by-step explanation:

5p + 1/2 p + 2/3p - 2.75

10/6p - 2.75

Which point is a solution to the inequality shown in this graph?
(0,4)
(-3,0)

Answers

Answer:

B.(-3,0)

Step-by-step explanation:

i just finished the test

(-3,0) point is a solution to the inequality shown in this graph.

What is the definition of inequality?

Inequality is a sort of equation in which the equal sign is missing. As we will see, inequality is defined as a statement regarding the relative magnitude of two claims.

There are two solutions os inequality are;

(0,4)

(-3,0)

But only one solution is given in the graph as;

(-3,0)

Hence, the (-3,0) is the point that is a solution to the inequality shown in this graph. Option B is correct.

To learn more about inequility, refer to;

https://brainly.com/question/20383699.

#SPJ2

2
Given the function below, which of the
following values will result in f(x)=1/2x+8

A. f(-2)
B. S(-4)
C. (4)
D. f(13)

Answers

The answer is d)f(13)

Solve the missing tables part 2.

Answers

Hopefully this helps

Solve:
5y + 3y +1+1 = 2y + 6y +6 +2

Answers

Answer:

0=6

There are no solutions to this answer.

Step-by-step explanation:

Answer:

There is no solution.

Step-by-step explanation:

PLZ HELP ME?!?!?!?!?!?!?!?!?!?!?!!!???!?!?!?!?

At the electronics store, James bought a headset that was originally priced at $90 for $60. What was the percent of change in the headset's price?

Answers

Answer:

30%

Step-by-step explanation:

What is the slope of the line whose equation is y - = 0? slope = slope = - slope = 0

Answers

Answer:

the slope is 0

Step-by-step explanation:

Answer:

the slope is 0

Step-by-step explanation:

help ill give brainleest

Answers

Answer:

x=-3

Step-by-step explanation:

55+54 equals 109

180 minus 109 equals 71

-3 plus 74 equals the 71 degrees that you need

Which of the following correctly represents the given data in the problem?
a = 24, g = 48, h = 22, i = 80
a = 22, c = 80, d = 24, i = 48
a = 24, b = 48, c = 22, i = 48
a = 24, c = 48, e = 22, i = 80

Answers

Answer:

D

Step-by-step explanation:

100% true

Answer:

It is D

Step-by-step explanation:

1
2
3
4
5
7
9
10
Which graph shows the solution set for 2x+3 >-9?
8 -7
-2 -1 0 1 2

6 -5 -4 -3 -2 -1 0 1 2
-8 7 6 5 4 3 2
0
1 2
-8 -7 -6
-3 -2 -1 0
1
2.

Answers

Answer:

6 -5 -4 -3 -2 -1 0 1 2

Step-by-step explanation:

Use the graph below for this question: What is the average rate of change from x = 0 to x = 2?

3
−1
2
−2

Answers

Answer:

the answer is C. 2

Step-by-step explanation:

Answer:

wajud ko kabalo ani byyy sorry

The number of years a Mars rover is expected to function on the surface of Mars is exponentially distributed with parameter λ = 0.25. If the company Budget Mars Explorer Inc. successfully lands a Mars rover on the planet Mars, what is the probability that it will be working for an additional 10 years after it last sent a communication to mission control?

Answers

Answer:

the probability that it will be working for an additional 10 years after it last sent a communication to mission control is 0.0821

Step-by-step explanation:

Given that;

years a Mars rover is expected to function on the surface of Mars λ = 0.25

probability that it will be working for an additional 10 years after it last sent a communication to mission control?

Now x is number of years a Mars rover function

f(x) = 0.25e^-0.25x , 0 < n < ∞

so

P( X>10 ) = ₁₀∫^∞ 0.25e^(-0.25n) dn

= e^(-0.25 × 10)

= e^(-2.5})

= 0.0821

therefore the probability that it will be working for an additional 10 years after it last sent a communication to mission control is 0.0821

Pick A B or C. Explanation would be helpful

Answers

Answer:

c

Step-by-step explanation:

c is the correct answer

Which of the following is a solution for 5 - 2xs-3?
-4
4
1
-1

Answers

i want to say -1. if you first combine like terms the equation would look like 2-2x. then next step i did was divide both sides by negative 2 to get the x by itself. after i did that i got -1 x.

Hector made a batch of pancakes for his guests. He used 6 cups of milk, 3 eggs, and 9 cups of pancake mix. What is the constant of proportionality for the ratio of pancake mix to milk?
A.2/3
B.6/9
C.3/2
D.9/6​

Answers

9 cups pancake mix
6 cups milk

9/6 is your ratio
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