Suppose a sample of 256 was taken from a population with a standard deviation 96 centimeters. In this case, the sample mean will be within how many centimeters of the population mean 68% of the time?
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OpenStudy (hockeychick23):
@satellite73
OpenStudy (anonymous):
sorry don't know any statistics at all, only some math
OpenStudy (anonymous):
although i think maybe 68% is withing one standard deviation
you can look it up though
OpenStudy (hockeychick23):
yea 68% is 1 standard deviation
OpenStudy (hockeychick23):
the options are 4,6,8, 10
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OpenStudy (anonymous):
68% is related to probability with standard deviation 1 and Mu =0;
normal distribution;
OpenStudy (hockeychick23):
my guess is 8 what do you think
OpenStudy (anonymous):
as I see here this is not normal , then you have to move it to nromal
OpenStudy (anonymous):
P(-1<(X-mu)/sigma<1)
OpenStudy (hockeychick23):
wait so im wrong I thought it was right
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OpenStudy (anonymous):
256 is the tall ? with cm
deivation on this 96 ?
OpenStudy (hockeychick23):
oh 4
OpenStudy (hockeychick23):
i think im just going to skip the question its taking forever