3 years ago

I will give you Brainiest if you are right.

Mathematics

2 answers:

Vaselesa [24]3 years ago

7 0

B is the correct answer

vredina [299]3 years ago

4 0

It’s 8x+12 — just use the distributive property : a(b+c) = to ab + ac!

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Can someone helpppppppppppp

rosijanka [135]

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∠5

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A linear pair of angles create a straight line

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3 years ago

There are two balance beams at gym. One is 15 feet long,the other is 162 inches long. Which beam is longer?

insens350 [35]

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4 years ago

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Alja [10]

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poll finds that 54% of the 600 people polled favor the incumbent. Shortly after the poll is taken, it is disclosed that he had a

Paha777 [63]

Answer: A. z = -2.57

Step-by-step explanation:

Let p be the population proportion of people polled favor the incumbent.

As per given , we have

$H_0: p=0.54\\\ H_a: p$

Sample size : n= 1030

sample proportion : $\hat{p}=0.50$

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$z=\dfrac{0.50-0.54}{\sqrt{\dfrac{0.54(1-0.54)}{1030}}}\\\\= \dfrac{-0.04}{\sqrt{\dfrac{0.2484}{1030}}}\\\\=\dfrac{-0.04}{0.015529488}\approx-2.57$

Hence, the test statistic is z = -2.57 .

Thus , the correct answer is A. z = -2.57 .

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3 years ago