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pishuonlain [190]
3 years ago
5

Help meh by monday! Pls...before 8:40

Mathematics
2 answers:
mafiozo [28]3 years ago
4 0

Answer:

567

Step-by-step explanation:

rghjbvcdfghjk

Scrat [10]3 years ago
4 0

Answer:

567

Step-by-step explanation:

five hundred and sixty seven

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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}}

If we replace the values given we have:

Se=\frac{12}{\sqrt{100}}=1.2

So then the distribution for the sample mean \bar X is:

\bar X \sim N(\mu=80,Se=1.2)

5 0
3 years ago
Can anybody solve this, it’s due soon
zlopas [31]
Try looking it up becaus hard to understand
8 0
2 years ago
Please help <br><br><br> Will mark brainlist
Marina86 [1]
I think answer is b that is 10raise to 2
8 0
2 years ago
Which two equations would be most appropriately solved by using the zero product property?
kirza4 [7]
The first and the third equation can be solved by using the zero product property. Let us examine each equation.
4x²+16x=0
4x(x+4)=0
4x=0 and x+4=0
where x1=0 and x2=-4
Next answer is whown below:
(x+4)(x-12)=0
x1=-4 and x2=12
Therefore, the first and the third equations are the answers.
5 0
3 years ago
Read 2 more answers
Tesses ging for a maik. She waiks 125 miles in 5 hours. What is her speed?
lisov135 [29]

Answer:

25 miles/hour

Step-by-step explanation:

If you were to divide 125 by 5, you would get 25 miles per each hour as your answer. Brainless if I am correct.

5 0
2 years ago
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