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Svetllana [295]
3 years ago
7

Five less than a number is greater than 21​

Mathematics
1 answer:
aleksklad [387]3 years ago
4 0

Answer:

x>26

Step-by-step explanation:

x-5>21

x>21+5

x>26

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Out of 100 people sampled, 42 had kids. Based on this, construct a 99% confidence interval for the true population proportion of
maksim [4K]

Answer:

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Step-by-step explanation:

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.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

Out of 100 people sampled, 42 had kids.

This means that n = 100, \pi = \frac{42}{100} = 0.42

99% confidence level

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The upper limit of this interval is:

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The 99% confidence interval for the true population proportion of people with kids is (0.293, 0.547).

7 0
2 years ago
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