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2 years ago

100 POINTS| PLEASE ANSWER ASAP|

Mathematics

2 answers:

uranmaximum [27]2 years ago

3 0

A=47/60
B=12/60
C=47/60? I think
Does this help u?

disa [49]2 years ago

3 0

Answer:

A: 78% B: 20% C: 22%

Step-by-step explanation:

Use a calculator.

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DENIUS [597]

<h3>Answer: D) 72</h3>

======================================

Work Shown:

Angle PQR = (far arc - near arc)/2

2x+72 = ( (2x+252) - (2x+108) )/2

2x+72 = 144/2

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x = 0

-------------

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2 years ago

A sample of 1500 computer chips revealed that 55% of the chips do not fail in the first 1000 hours of their use. The company's p

Anvisha [2.4K]

Answer:

1.28

Step-by-step explanation:

Given that a sample of 1500 computer chips revealed that 55% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 53% of the chips do not fail in the first 1000 hours of their use.

$H_0: p = 0.53\\\\H_a: p \neq 0.53$

(Two tailed test for testing sample proportion with population proportion)

Std error of proportion assuming p = 0.53 is

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3 years ago