Find the sample variance for the data 9,12,9,14,6. Round the answer to one decimal place. Sample variance
1 answer:
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Hi Zack! Thanks for asking a question here on Brainly.
█ Explanation <span>█
</span>
<span>✦ We are looking to find the diameter of the circle.
</span>✦ Do the following formula to find the diameter.
✦
<span>✦ = 15 ft
</span>
Answer: 15 ft
<span>Hope that helps! ★ <span>If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia </span></span>
█ Explanation <span>█
</span>
<span>✦ We are looking to find the diameter of the circle.
</span>✦ Do the following formula to find the diameter.
✦
<span>✦ = 15 ft
</span>
Answer: 15 ft
<span>Hope that helps! ★ <span>If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia </span></span>
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:
And the distribution for the sample mean is given by:
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:
If we replace the values given we have:
So then the distribution for the sample mean is: