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melamori03 [73]
3 years ago
12

What is the x in x/2=7​

Mathematics
2 answers:
AURORKA [14]3 years ago
8 0

Answer:

14

Step-by-step explanation:

x/2=7 multiply 2 on both sides x=14

Yanka [14]3 years ago
6 0

Answer:

14

Step-by-step explanation:

7x2=14

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The sum of the squares of two consecutive negative integers is 61. Find the smaller of the two integers
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a major metroplitan newspaper selected a simple random sample of 1,600 readers from their list of 100,000 subscribers. they aske
Arisa [49]

Answer:

The 99% confidence interval for the proportion of readers who would like more coverage of local news is (0.3685, 0.4315).

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 zscore that has a pvalue of 1 - \frac{\alpha}{2}.

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n = 1600, \pi = 0.4

99% confidence level

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The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4 + 2.575\sqrt{\frac{0.4*0.6}{1600}} = 0.4315

The 99% confidence interval for the proportion of readers who would like more coverage of local news is (0.3685, 0.4315).

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