Help I need to answer this question now ASAP

Mathematics

2 answers:

Likurg_2 [28]2 years ago

8 0

All of them except 5!
mark me brainliest please and lmk if you need help with anything else.

Artyom0805 [142]2 years ago

5 0

Answer:

-5

0.9

-1.3

Step-by-step explanation:

comment if u still need explanation :)

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Answer:

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Step-by-step explanation:

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nika2105 [10]

Shape: the form of an object

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A simple random sample of 100 observations was taken from a large population. The sample mean and the standard deviation were de

olga2289 [7]

Answer:

Se=1.2

Step-by-step explanation:

The standard error is the standard deviation of a sample population. "It measures the accuracy with which a sample represents a population".

The central limit theorem (CLT) states "that the distribution of sample means approximates a normal distribution, as the sample size becomes larger, assuming that all samples are identical in size, and regardless of the population distribution shape"

The sample mean is defined as:

$\bar X =\frac{\sum_{i=1}^n x_i}{n}$

And the distribution for the sample mean is given by:

$\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})$

Let X denotes the random variable that measures the particular characteristic of interest. Let, X1, X2, …, Xn be the values of the random variable for the n units of the sample.

As the sample size is large,(>30) it can be assumed that the distribution is normal. The standard error of the sample mean X bar is given by:

$Se=\frac{\sigma}{\sqrt{n}}$