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Flura [38]
3 years ago
5

Tell whether the statement is sometimes, always, or never true. Explain your reasoning. The x-coordinate of a point on the x-axi

s is zero.
Mathematics
2 answers:
Tom [10]3 years ago
3 0
I think this would be sometimes true
MakcuM [25]3 years ago
3 0
This is sometimes true!
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Zinaida [17]

=.34

=.06

=.36

=.878

=.77

=.14

8 0
3 years ago
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Encuentra el valor de la incógnita -24/x = 6
Marat540 [252]

Answer:

x = -4

The solution is x = -4

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(Please answer ASAP) (Thank you &lt;3)<br><br> What is the relative frequency for Group A.
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The answer is D, I think so

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What is the product of 710 and 323?<br><br> 135<br><br> 11315<br><br> 21730<br><br> 3715
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3 years ago
Social media is popular around the world. Statista provides estimate of the number of social media users in various countries in
amm1812

Answer:

Kindly check explanation

Step-by-step explanation:

The data table :

Use of SM _UK _China _ Russia _US _ col total

Yes ______480 __215 ___343 __640 _ 1678

No _______320 _ 285 ___357__ 360 _ 1322

Row Total__ 800 _500 __ 700_ 1000_ 3000

H0 : p1 = p2 = p3 = p4

H1 : p1 ≠ p2 ≠ p3 ≠ p4

Test statistic :

χ² = Σ(observed - Expected)² / Expected

Expected value of each cell = (Row total * column total) / N

N = grand total

Expected Values:

447.467 _279.667 _ 391.533 _ 559.333

352.533 _ 220.333 _ 308.467 _ 440.667

χ²=(2.36536+14.9527+6.01605+11.6337+3.00232 18.9793+7.63611+14.7665) = 79.352

Degree of freedom, df = (row-1)*(column-1) = (2 - 1) * (4 - 1) = 1 * 3 = 3

Using the Pvalue from Chisquare calculator :

Pvalue(79.352, 3) = 0.00000000001

Decision region :

Reject H0 ; If Pvalue < α

α = 0.05

Since 0.000000001 < 0.05 ; Reject H0 and conclude that not all population proportion are equal.

Sample proportion :

Phat = number of yes, x / total

For UK, Phat = 480/800 = 0.6

For China , Phat = 215/500 = 0.43

For Russia , Phat = 343/700 = 0.49

For US, Phat = 640/1000 = 0.64

7 0
3 years ago
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