To be able to say with 95% confidence level that the standard deviation of a data set is within 10% of the population's standard deviation, the number of observations within the data set must be greater than or equal to what quantity?
The answer in this question is 97. 0.20 SD = 1.96 SD / sqrt(n) n = (1.96 / .200)^2 n = 96.04 Which is rounded Up to 97 The number of observations within the data set must be greater than or equal to the quantity of 97.
