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3 years ago

What is the range of a sine function?

Mathematics

1 answer:

vesna_86 [32]3 years ago

7 0

Answer:

All real numbers between -1 and 1, including -1 and 1

Step-by-step explanation:

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Answer:

around 4.1

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3 years ago

What is the prefix in regroup? what dose it mean?

kupik [55]

The prefix in the word "regroup" is "re" and it means "again". Separate the words like this (re)read to find the "prefix"

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3 years ago

Choose the equation of the horiontal line that passes though the point<br> 2,3

Rzqust [24]

The horizontal line has an equation: y = a, where a is any real number.

We know, the line passes through the point (2, 3) → x = 2, y = 3.

<h3>Answer: y = 3</h3>

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3 years ago

A simple random sample of 64 observations was taken from a large population. The population standard deviation is 120. The sampl

jeka94

Answer:

<h3>The standard error of the mean is <u>15</u></h3>

Step-by-step explanation:

Given that a simple random sample of 64 observations was taken from a large population.

Hence it can be written as n=64

The population standard deviation is 120.

It can be written as $\sigma_{\overline{X}}=120$

The sample mean was determined to be 320.

It can be written as $\overline{X}=\mu =320$

<h3>To find the standard error of the mean :</h3>

The formula for the standard error of the mean is given by

$\sigma_{\overline{X}}=\frac{\sigma}{\sqrt{n}}$

Now substitute the values in the formula we get

$\sigma_{\overline{X}}=\frac{120}{\sqrt{64}}$

$=\frac{120}{8}$

$=15$

$\sigma_{\overline{X}}=15$

<h3>∴ The standard error of the mean is 15</h3>

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3 years ago