A laboratory tested 82 chicken eggs and found that the mean amount of cholesterol was 228
=19.0 milligrams. Construct a 95% confidence interval for the true mean
, of all such eggs.
The critical value t
that corresponds to a ________% confidence level with 1000 degrees
of freedom is 2.33.
To be able to say with 95%
confidence that the standard deviation of a data set is within 10%
of the population's
the number of observations within the data set must be
greater than or equal to what quantity?
You want to be 95%
confident that the sample standard deviation is within 40%
population standard deviation. Find the appropriate minimum sample size.