ecause population parameters are typically unknown, we use the ______ to estimate the value of the standard error.

Q3. Calculate Estimated Standard error (SE)from the following data: 3 4 5 2 1 y 3 4 6.

An IQ test is designed so that the mean is 100 and the standard deviation is 17for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99​% confidence that the sample mean is within 4 IQ points of the true mean. Assume that σ=17 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation.   Part 1 The required sample size is. (enter your response here. )​(Round up to the nearest​ integer.) Part 2 Would it be reasonable to sample this number of​ students?   Yes. This number of IQ test scores is a fairly large number.   No. This number of IQ test scores is a fairly large number.   Yes. This number of IQ test scores is a fairly small number.   No. This number of IQ test scores is a fairly small number.

One of the following is the minimum variance unbiased estimator for u. The sample variance. The sample mean. The sample mean square error. The meadian.