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marin [14]
3 years ago
8

What is 20 divided by 2

Mathematics
2 answers:
kondaur [170]3 years ago
8 0

Answer:

10

Step-by-step explanation:

2×1=2

2×2=4

2×3=6

2×4=8

2×5=10

2×6=12

2×7=14

2×8=16

2×9=18

<u><em>2×10=20</em></u>

Tcecarenko [31]3 years ago
5 0

Answer:

10

Step-by-step explanation:

10 x 2 = 20

10 = 20 / 2

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Question 3 A study was performed to determine whether men and women differ in their repeatability in assembling components on pr
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Answer:

There is no sufficient evidence to support the claim that men and women differ in repeatability for this assembly task

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Given

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n_1 = 25

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s_1 = 0.98

s_2 = 1.02

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Required

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First, we need to state the hypotheses

H_o: \sigma_1^2 = \sigma_2^2

H_1: \sigma_1^2 \ne \sigma_2^2

Next, calculate the test statistic using:

F = \frac{s_1^2}{s_2^2}

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Calculate the rejection region;

But first, calculate the degrees of freedom

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df_1 =25 - 1

df_1 =24

df_2 = n_2 -1

df_2 = 21 - 1

df_2 = 20

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c = \frac{\alpha}{2}

c = \frac{0.02}{2}

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At 0.01 level (check row 20 and column 24), the critical value is:

<em></em>f_{0.01,24,20} = 2.86<em> --- the upper bound</em>

At 0.01 level (check row 24 and column 20), the critical value is:

f_{0.01,20,24} = 2.74

Calculate the inverse F distribution.

f_{0.99,20,24} = \frac{1}{f_{0.01,20,24}} = \frac{1}{2.74} =0.365 ---- the lower bound

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If the test statistic falls within this region, then the null hypothesis is rejected

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0.365 < 0.923 < 2.86

<em>The above inequality is true; so, the null hypothesis is rejected.</em>

<em>This implies that, there is no sufficient evidence.</em>

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Answer:

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