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Advocard [28]
3 years ago
12

An independent-measures research study uses two samples, each with n = 12 participants.If the data produce a t statistic of t =

2.08, then which of the following is the correct decision for a two-tailed hypothesis test?​
a. ​Reject the null hypothesis with either α = .05 or α = .01
b. ​It cannot be answered without additional information.
c. Reject the null hypothesis with α = .05 but fail to reject with α = .01
d. ​Fail to reject the null hypothesis with either α = .05 or α = .01
Mathematics
1 answer:
lana [24]3 years ago
7 0

Answer:

B- It cannot be answered without additional information.

Step-by-step explanation:

From the question, we have α= 0.01 and α= 0.05.

Thus;

We can decide to look at the critical values and check if test statistic is less or more than the tabulated value for α= 0.01 and 0.05.

However, that will not be sufficient as neither the level of significance nor confidence level is clearly mentioned in the question and thus, we can not answer it without additional information.

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The floor of a rectangular room is 300 cm long and 180 cm wide. to carpet the floor? How many small tiles are needed​
Vinvika [58]

The number of small tiles are needed​ is 300 tiles.

<h3>Number of tiles needed</h3>

Using area of rectangular formula

Area of the room = length(l) × breadth (b)

Area of the room=300 cm×180 cm

Area of the room=54,000 cm²

Number of tiles needed = Area of rectangular region / Area of one tile

Number of tiles needed=54,000/180

Number of tiles needed=300 tiles

Therefore the number of small tiles are needed​ is 300 tiles.

Learn more about number of tiles needed here:brainly.com/question/2136390

#SPJ1

4 0
2 years ago
What is the solution set of the equation X/5 + x/2 =14?
JulijaS [17]

Answer:

x= 20

Step-by-step explanation:

Solve for x:

(7 x)/10 = 14

Multiply both sides of (7 x)/10 = 14 by 10/7:

(10×7 x)/(7×10) = 10/7×14

10/7×7/10 = (10×7)/(7×10):

(10×7)/(7×10) x = 10/7×14

10/7×14 = (10×14)/7:

(10×7 x)/(7×10) = (10×14)/7

(10×7 x)/(7×10) = (7×10)/(7×10)×x = x:

x = (10×14)/7

14/7 = (7×2)/7 = 2:

x = 10×2

10×2 = 20:

Answer:  x = 20

7 0
3 years ago
What is the surface area of the rectangular pyramid
posledela

Answer:

<h2>41.74 m²</h2>

Step-by-step explanation:

We have:

rectangle 4.8 m × 3.8 m

two triangles with base b = 4.8 m and height h = 2.6 m

two triangle with base b = 3.8 m and height h = 2.9 m.

The formula of an area of a rectangle l × w:

A = lw

Substitute:

A_1 = (4.8)(3.8) = 18.24\ m^2

The formula of an area of a triangle:

A=\dfrac{bh}{2}

Substitute:

A_2=\dfrac{(4.8)(2.6)}{2}=6.24\ m^2\\\\A_3=\dfrac{(3.8)(2.9)}{2}=5.51\ m^2

The Surface Area:

S.A.=A_1+2A_2+2A_3\\\\S.A.=18.24+2(6.24)+2(5.51)=41.74\ m^2

3 0
3 years ago
Need help thinks its d​
lyudmila [28]

Answer: you're right, it is D.

Step-by-step explanation:

4 0
2 years ago
Which is the solution to <br> 2<br> x<br> −<br> 6<br> +<br> 4<br> =<br> 14<br> ?
Kaylis [27]

Answer:

x=8

Step-by-step explanation:

2x-6+4=14

Combine like terms

2x-2=14

Add 2

2x=16

Divide

x=8

Checking work)

2(8)-2=14

16-2=14

14=14

8 0
2 years ago
Read 2 more answers
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