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Shkiper50 [21]
2 years ago
14

I don't know what to write here but Brainly says i need to put 20 characters at least so umm that's why Im talking to much for s

ay just "help"

Mathematics
2 answers:
Marta_Voda [28]2 years ago
7 0

ikr you gotta point lol.

Darina [25.2K]2 years ago
7 0

Answer:

4:8

Step-by-step explanation:

One group of socks has 4 white and 8 black so the ratio is 4 white socks for every 8 black socks. (4:8)

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ducational Television In a random sample of people, said that they watched educational television. Find the confidence interval
SIZIF [17.4K]

Complete Question

Educational Television In a random sample of 200 people, 159 said that they watched educational television. Find the 90% confidence interval of the true proportion of people who watched educational television. Round the answers to at least three decimal places.

Answer:

The 90% confidence interval is   0.748  <  p <  0.842      

Step-by-step explanation:

From the question we are told that

     The sample size is  n = 200

     The number of people that watched the educational television is k =  159

Generally the sample proportion is mathematically represented as

               \^ p =  \frac{159}{200}

=>               \^ p =  0.795

From the question we are told the confidence level is  90% , hence the level of significance is    

      \alpha = (100 - 90) \%

=>   \alpha = 0.10

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.645

Generally the margin of error is mathematically represented as  

     E =  Z_{\frac{\alpha }{2} } * \sqrt{\frac{\^ p (1- \^ p)}{n} }

=>     E =  1.645  * \sqrt{\frac{0.795 (1- 0.795)}{200} }

=>     E = 0.04696

Generally 95% confidence interval is mathematically represented as  

      \^ p -E <  p <  \^ p +E

=>    0.795  -0.04696  <  p <  0.795 + 0.04696

=>    0.748  <  p <  0.842      

3 0
3 years ago
The roots of the function f(x)=x^2-2x-3 are shown. what’s the missing number
aliya0001 [1]

Answer:

its 6

Step-by-step explanation:

i calculated but threw in trash by an accident

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The question is below
Digiron [165]

Answer:

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(b) 8 km/hour.

Step-by-step explanation:

(b) Jo travels 4 kilometres in 1/2 hour = 9 km/hour.

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3 years ago
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Would it be
1) -4.25
2) -5 1/4
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5) 3.85
6) 6.1
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3 years ago
Eric has saved $18,300 toward a down payment on a house. He makes a salary of $59,750 a year. What is the maximum he could affor
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I think its b, i hope this is the rigth answer this was a little tough...

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