The figure for this exercise is a histogram summarizing the responses given by 116 college students to a question asking how much they had slept the previous night (Data source: sleep study dataset on the companion website).
a. Describe the shape of the dataset. Explain whether it is symmetric or skewed.
b. Are there any outliers? For any outlier, give an approximate value for the amount of sleep, and explain why you think the value is an outlier.
c. What was the most frequently reported value (approximately) for the amount of sleep the previous night?
d. Roughly, how many students said that they slept 8 hours the previous night?