A sample (X) of scores from a population has been extracted as follows. The analyst has observed the given Z values for a series of confidence levels. Calculate the following for X (Round the answer to 3 decimal places): Sample Mean Sample Standard Beviation Confident interval for 959 confidence After collecting another sample [Y ) trom 9 individuals: the analyst. calculated the mean of Y witha confidence interval 2442 with 9000 s. confidence. What is thestandard deviation of Y?.