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3 years ago

I need help for this question

Mathematics

2 answers:

PolarNik [594]3 years ago

8 0

Answer:

Option D) $\checkmark$

$\pink{▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬}$

larisa [96]3 years ago

4 0

Answer:

Option (A) is is correct ✔

Hope it helps❤

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3 years ago

-6+x=2x-5 what is the answer to this problem

Gnoma [55]

Answer:

x= -1

Step-by-step explanation

First move the variables to the left and change it's sign

(-6+x-2x=-5)

Then combine like terms

(-6-x=-5)

Then move the -6 to the right and combine it with the -5

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4 years ago

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babymother [125]

Answer: 16/45 of the spool

Step-by-step explanation:

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2 years ago

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About 78% of the US, population claims that they visit the dentist at least once a year. simple random sample of 200 people is s

Blababa [14]

Answer:

D) 0.78, 0.029

Step-by-step explanation:

Central Limit Theorem:

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean $\mu = p$ and standard deviation $s = \sqrt{\frac{p(1-p)}{n}}$

About 78% of the US, population claims that they visit the dentist at least once a year.

This means that $p = 0.78$

Random sample of 200 people:

This means that $n = 200$

Mean and standard deviation of the sampling distribution:

By the Central Limit Theorem

Mean $\mu = 0.78$

Standard deviation $s = \sqrt{\frac{0.78*0.22}{200}} = 0.029$

So the correct answer is given by option D.

7 0

3 years ago

Hello! I NEED HELP BADLY YALL

natulia [17]

answer and solution in photo

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4 years ago