The accompanying summary data

Reference no: EM131099747

The accompanying summary data on CeO2 particle sizes (nm) under certain experimental conditions was read from a graph in the article

a. What proportion of the observations are less than 5?

b. What proportion of the observations are at least 6?

c. Construct a histogram with relative frequency on the vertical axis and comment on interesting features. In particular, does the distribution of particle sizes appear to be reasonably symmetric or somewhat skewed? [Note: The investigators fit a lognormal distribution to the data; this is discussed in Chapter 4.]

d. Construct a histogram with density on the vertical axis and compare to the histogram in (c)

Reference no: EM131099747

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