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juin [17]
2 years ago
6

2. What is the length of the horizontal line segment joining points C(-9,205) and D(4,205)?​

Mathematics
1 answer:
arsen [322]2 years ago
3 0

Answer:

13 unit

Step-by-step explanation:

................

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Answer:

Null hypothesis is rejected. Standard deviation is > 8 miles per hour

Step-by-step explanation:

σ [Population standard deviation] = 8 , s [sample standard deviation] = s

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H0 [Null] : σ = 8 ; H1 [Alternate - Right Tail] : σ > 8

χ2 = (n - 1) . s^2 / σ^2

= 49 x (10.5)^2 / 82 = 5402.25 / 64

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df [degree of freedom] = n -1 = 50 - 1 = 49

P value (χ^2 49 > 84.410) = 0.00125

p = 0.0013

p < α ie 0.05

So, H0 is rejected

Hence we state that standard deviation is > 8 miles per hpur

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Step-by-step explanation:

23/2

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2-1/3(p) is the answer
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