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2 years ago

(Percents;mathematics;AAC) If you answer 1-4 1st you get BRAINLLEST

Mathematics

2 answers:

Vladimir [108]2 years ago

7 0

Answer:

Step-by-step explanation:

zaharov [31]2 years ago

3 0

1. 9%
2. 272 students
3. A
4. Point B?

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An article retails for 27.50. The city sales tax is 6%, and the federal excise tax is 8%. How much does the article cost altoget

-Dominant- [34]

Cost of the article = $27.50
Amount of city sales tax = (27.50 x 6%) = $1.65
Amount of excise tax = (27.50 x 8%) = $2.20
From my knowledge, we pay city sales tax and federal excise tax when we buy something, so the total cost would be $31.35

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The scatter plot shows how the cooking time for a beef roast is related to its weight. Which statement is NOT supported by the t

bija089 [108]

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3 years ago

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A manufacturer of cell phone screens is concerned because 12 percent of the screens manufactured using a previous process were r

fomenos

Answer: A.

$H_0:p=0.12\\\\H_a:p$

Step-by-step explanation:

Null hypothesis $(H_0)$ : A statement describing population parameters as per the objective of the study. It usually takes "≤,≥,=" signs.

Alternative hypothesis $(H_a)$ : A statement describing population parameters as per the objective of the study. It usually takes ">, <, ≠" signs.

Let p be the proportion of screens that will be rejected.

12 percent of the screens manufactured using a previous process were rejected at the final inspection.

(i.e. p= 0.12)

Objective of the study = whether the new process<em> reduces </em>the population proportion of screens that will be rejected

i.e. p< 0.12

So, the appropriate hypotheses to investigate whether the new process reduces the population proportion of screens that will be rejected:

$H_0:p=0.12\\\\H_a:p$

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Answer:

462 cu. in

Step-by-step explanation:

See attached formula

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