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3 years ago

What is α3 = -343 answer

Mathematics

1 answer:

Natasha_Volkova [10]3 years ago

7 0

Answer:

a3= -343

divade both side by 3 to make a the subject

a3/3= -343/3

a = -114.3

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Read 2 more answers

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In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

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In which

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For this problem, we have that:

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95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

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The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.26 + 1.96\sqrt{\frac{0.26*0.74}{1000}} = 0.2872$

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3 years ago