2 years ago

What is the best estimate of the sum of fractions?

Mathematics

2 answers:

astra-53 [7]2 years ago

6 0

14 1/2 is what I got

LiRa [457]2 years ago

6 0

Answer:

13

Step-by-step explanation:

Edgeunity 2021

I'm pretty sure, I just estmated the answer to 13 which was the closest.

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The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 122 and standard deviation of 22

marin [14]

Answer: 4.27% of adults in the USA have stage 2 high blood pressure.

Step-by-step explanation:

Let x be a random variable that denotes a person with high blood pressure .

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Standard deviation: $\sigma=22$

Someone qualifies as having Stage 2 high blood pressure if their systolic blood pressure is 160 or higher.

The probability that an adult in the USA have stage 2 high blood pressure:

$P(x\geq160)=P(\dfrac{x-\mu}{\sigma}}\geq\dfrac{160-122}{22})\\\\=P(z\geq1.72)\ \ \ [z=\dfrac{x-\mu}{\sigma}]\\\\=1-P(z$

Hence, 4.27% of adults in the USA have stage 2 high blood pressure.

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3 years ago

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slava [35]

3 would be your answer

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AlladinOne [14]

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3 years ago

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bixtya [17]

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2 years ago

What is the best estimate of the sum of fractions? ​

What is the best estimate of the sum of fractions?