In an attempt to judge and monitor the quality of instruction, the administration of? Mega-Byte Academy devised an examination to test students on the basic concepts that all should have learned. Each? year, a random sample of 10 graduating students is selected for the test. The average score is used to track the quality of the educational process. Test results for the past 10 years are shown in the table below.
Use these data to estimate the center and standard deviation for this distribution. Then calculate the two?-sigma control limits for the process average. What comments would you make to the administration of the? Mega-Byte Academy?
The center of the distribution is estimated as________
The standard deviation is _________
(Enter your responses rounded to one decimal? place.)
