SOLUTION: The question is : Mean of 20 observations is 17. If in the observations, observation 40 is replaced by 12, find the new mean.
Algebra.Com
Question 857348: The question is : Mean of 20 observations is 17. If in the observations, observation 40 is replaced by 12, find the new mean.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The question is : Mean of 20 observations is 17. If in the observations, observation 40 is replaced by 12, find the new mean.
:
Find the sum of the other 19 observations
= 17
multiply both sides by 20
n + 40 = 340
n = 340 - 40
n = 300
"observation 40 is replaced by 12,
m =
m = 312/20
m = 15.6 is the new mean
RELATED QUESTIONS
the mean of 5 observations is 20.including one new observation,the mean is 25.find the... (answered by jim_thompson5910)
the mean of 10 observations is 15 .if an observation 24 is deleted ,find the of the... (answered by ikleyn)
The mean of 20 observations in an experiment is 4. If the observed largest value is 23,... (answered by ankor@dixie-net.com)
If the mean of 5 observations is 24 and when a constant k is added to each observation,... (answered by stanbon)
A quantitative variable contains 10 observations that have a mean value of 25. One of the (answered by stanbon)
Who's online? Tutor, please help.
The mean and standard deviation of 15 observations are (answered by math_tutor2020)
There is a set of 100 observations with a mean of 46 and a standard deviation of 0. What... (answered by Fombitz)
The algebraic sum of debiations of 20 observations measured from 30 is 2.then the mean of (answered by KMST)
If the median of 21 observations is 40 and if the observations greater than the median... (answered by stanbon)