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3 years ago

Harriet rolls a number cube what is the probability that the number cube will land on three or four

Mathematics

1 answer:

makvit [3.9K]3 years ago

6 0

Her chances of getting that should be 2/6

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snow_tiger [21]

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3 years ago

From the records of a health-insurance companies in Pennsylvania, it is known that 58% of the accounts include dental coverage.

kobusy [5.1K]

Answer: 0.0221

Step-by-step explanation:

We know that the formula to find the standard deviation of the sample proportion is :

$\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}$

, where p = proportion of success.

n= sample size.

As per given , we have

p=0.58

n= 500

Then, the standard deviation of the sample proportion in this situation would be :

$\sigma_p=\sqrt{\dfrac{0.58(1-0.58)}{500}}\\\\=\sqrt{\dfrac{0.2436}{500}}\\\\=\sqrt{0.0004872}\\\\\approx0.0221$

Hence, the standard deviation of the sample proportion in this situation is 0.0221 .

8 0

3 years ago