## Standard Deviation Resources

A random sample of 40 students that took an online SAT course had an average score of 1870. Suppose we know the standard deviation of the underlying population to be 100. Find the mean and standard...

We have learned that 99.73% of the parts from a process in control will fall within 6 standard deviations of the mean or average (3 above the mean and 3 below the mean). This particular width, 6 standard...

A livestock company reports that the mean weight of a group of young steers is 1086 pounds with a standard deviation of 55 pounds. Based on the model N(1086,55) for the weights of steers, what percent...

The mean length of Beethoven’s nine symphonies is 37 minutes; the standard deviation is 12 minutes. The data values are the following minutes: 23, 30, 47, 35, 30, 40, 35, 22, and 65. Determine...

The weights of members of a baseball league are normally distributed with a mean of 176 pounds and a standard deviation of 11.4 pounds. Consider a league membership of 120 members.