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Sindrei [870]
3 years ago
15

What’s the value of x?

Mathematics
2 answers:
Phantasy [73]3 years ago
4 0
110°

A=70° so B=110° because A and B are supplementary. Therefore x=110° too.
loris [4]3 years ago
3 0

Answer:

wala nashang value sayu dahil may iba nasha

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We can claim with 95% confidence that the proportion of executives that prefer trucks is between 19.2% and 32.8%.

Step-by-step explanation:

We have a sample of executives, of size n=160, and the proportion that prefer trucks is 26%.

We have to calculate a 95% confidence interval for the proportion.

The sample proportion is p=0.26.

 

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.26*0.74}{160}}\\\\\\ \sigma_p=\sqrt{0.0012}=0.0347

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We can claim with 95% confidence that the proportion of executives that prefer trucks is between 19.2% and 32.8%.

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