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Anna11 [10]
3 years ago
10

A researcher records the level of attention among 18 students during an interactive and lecture portion of a single class. If sh

e computes a related samples t test at a 0.05 level of significance (two-tailed test), then what is the critical value for this test?
A) ±1.734
B) ±1.740
C) ±2.110
D) ±2.101
Mathematics
1 answer:
brilliants [131]3 years ago
5 0

Answer:

The answer is D) ±2.101

Step-by-step explanation:

For a two-tailed test

n=18

a=0.05

a/2=0.05/2=0.025

1-a/2=1-0.025=0.975

From the t-distribution table, 0.975 along 18=2.101

Hence, the answer is ±2.101

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inn [45]

Answer:

Step-by-step explanation:

Yes... G=5 okay....

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2 years ago
Find the coordinates of the y-intercept and x-intercepts of the following. (image!)
marissa [1.9K]

Answer:

Step-by-step explanation:

We can do this  a couple of ways. We can graph it -- see below. Or we can do the math.

Math

y = x^2 - 2x - 15

This trinomial factors into

y = (x - 5)(x + 3)

from which

x - 5= 0

x = 5

and

x + 3 = 0

x = - 3

The y intercept is the value obtained when all the xs on the right = 0

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y = - 15

<em>Answer</em>

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The graph is below.

4 0
2 years ago
If f(x)=5x^2 and g(x)=x+1 find (f•g)
LenKa [72]

(f•g)=   f(1)•g(1)

= 5(1)^2 • (1)+1

= 5(1) • 2

= 5 • 2

= 10

Your answer here is 10.

Hope I helped!

8 0
3 years ago
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A box has a base of 12 inches by 12 inches and a height of 30 inches. What is the length of the interior diagonal of the box? Ro
Wittaler [7]

The sides of the box are 12in by 12in by 30in.

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The final answer is 34.47in.

My deepest apology if this is not what you meant.

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shtirl [24]
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