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svetoff [14.1K]
3 years ago
13

PROOF ‼️ASAP!!! BRAINLIEST!!‼️ PLS HELP + EXPLAIN!!! Thx! (NO LINKS PLEASE)

Mathematics
1 answer:
ElenaW [278]3 years ago
7 0

Step-by-step explanation:

1) m∠1 = m∠4, m∠2 = m∠3   (1) Given

2) m∠AFC = ∠1 + ∠2             (2) Angle Addition Postulate

3) m∠EFC = ∠3 + ∠4            (3) Angle Addition Postulate

4) m∠EFC = ∠1 + ∠2             (4) Substitution

5) m∠AFC = m∠EFC             (5) Transitive Property

Thnk you

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Answer:

The sample size is 4

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Null hypothesis: The mean is 2

Alternate hypothesis: The mean is less than 2

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At 95% confidence level, t-value is 1.960

Assuming the lower bound of the mean is 1.04

Lower bound = mean - (t×sd/√n)

1.04 = 3 - (1.96×2/√n)

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3.92/√n = 1.96

√n = 3.92/1.96

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n = 2^2

n = 4

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Step-by-step explanation:

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