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3 years ago

Help please! the question is in the picture below for reference when answering! thank you so much!

Mathematics

1 answer:

Dmitry [639]3 years ago

5 0

Answer:

(a, 0) I give 50% credit to the answer in the comments

Step-by-step explanation:

Because it is isosceles, we must have the same y distance, (a) as an x distance

So we must have (a) in the x coordinate

The correct option is number 2

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

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Answer:

The p-value for this test is 0.22065.

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We are given that a national study report indicated that 20.9% of Americans were identified as having medical bill financial issues.

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Let p = proportion of Americans who were identified as having medical bill financial issues in 10 cities.

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Alternate Hypothesis, $H_A$ : p > 20.9% {means that % of Americans who were identified as having medical bill financial issues in these 10 cities is more than 20.9% and is more severe}

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where, $\hat p$ = sample proportion of 400 Americans from 10 cities who were found having such difficulty = $\frac{90}{400}$ = 0.225 or 22.5%

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So, test statistics = $\frac{0.225-0.209}{{\sqrt{\frac{0.225(1-0.225)}{400} } } } }$

= 0.77

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