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Crazy boy [7]
3 years ago
14

A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is –2 standard devi

ations away from the mean.
Mathematics
2 answers:
dybincka [34]3 years ago
6 0
45+8.3 = 53.3 

<span>45 - (2(8.3)) = 28.4

The value is </span> 28.4 <span>that is –2 standard deviations away from the mean.</span><span>

</span>
Kamila [148]3 years ago
4 0

Answer: 28.4

Step-by-step explanation:

Given : A set of data with a mean of \mu= 45and a standard deviation of  \sigma=8.3 is normally distributed.

Now, the value that is –2 standard deviations away from the mean is given by :-

x=\mu-2\sigma\\\\\Rightrrrow\ x=45-2(8.3)\\\\\Rightarrow\ x=45-16.6\\\\\Rightrrrow\ x=28.4

Hence, the value that is –2 standard deviations away from the mean. = 28.4

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