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zlopas [31]
3 years ago
11

I need help this is hard

Mathematics
1 answer:
Lerok [7]3 years ago
7 0

Answer:

2 cm

Step-by-step explanation:

The red triangle has legs measuring 1.2 cm and 1.6 cm.

You need x, the length of the hypotenuse.

Use the Pythagorean theorem.

(1.2 cm)² + (1.6 cm)² = x²

4 cm² = x²

x = 2 cm

Answer: 2 cm

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The difference (faculty-student) in the sample proportions of those who believe that five minutes is not enough time for students to change classes typically varies about 0.096 from the true difference in proportions. Option D is correct.

<h3>What is the standard deviation?</h3>

It is a measurement of statistical data dispersion. The degree to which the value varies is known as standard deviation.

The standard deviation of the sampling distribution is found as;

\rm \sigma_F-\sigma_s= \sqrt{\frac{0.37 \times (1-0.37)}{28}+\frac{0.89 \times (1-0.89)}{100}  } \\\\  \sigma_F-\sigma_s=0.096

The difference in the sample proportions of those who think five minutes is not enough time for students to switch classrooms generally differs by roughly 0.096 from the actual difference in proportions.

Hence option D is correct.

To learn more about the standard deviation, refer to: brainly.com/question/16555520.

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