Which of the following are NOT likely to be well modeled by a normal distribution because the distribution is NOT likely to be symmetric?
1) The scores from a university's mathematics placement exam in which the minimum score is 0 and the maximum score is 100. Although there were scores throughout the entire range, more than half of the students scored over 85. This is likely to be skewed to the left.
2) The number of hours students at a large university work per week at outside jobs. More than 75
3) The height (in centimeters) of 10 year old boys in the U.S. Rarely are values lower than 120 cm or over 160 cm and the majority are between 135 cm and 145 cm.
4) The amounts of time people wait at a particular bus stop for the bus. About 60