Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6. If there were 334 exams with scores of at least 89, how many students took the exam?

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.

c

step-by-step explanation: