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Leno4ka [110]
3 years ago
15

What is 4/9 • t when t=1/3

Mathematics
2 answers:
Reptile [31]3 years ago
8 0
\frac{4}{9}* \frac{1}{3}= \frac{4}{27}
Simora [160]3 years ago
6 0
The answer will 4/27
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Answer:

The degrees of freedom for this sample are 27.

The sample size to get a margin of error equal or less than 0.3656 is n=4450.

Step-by-step explanation:

The degrees of freedom for calculating the value of t are:

df=n-1=28-1=27

With 27 degrees of freedom and 95% confidence level, from a table we can get that the t-value is t=2.052.

The sample size to get a margin of error equal or less than 0.3656 can be calculated as:

MOE=t\cdot s/\sqrt{n}\\\\n=\left(\dfrac{t\cdot s}{MOE}\right)^2=\left(\dfrac{2.052\cdot 11.8841}{0.3656}\right)^2=66.7^2\\\\\\n=4449.13\approx4450

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Step-by-step explanation:

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