The box-and-whisker plot represents the prices (in dollars) of the entrees at a restaurant. a. Find and interpret the range of the data.

The range is

The prices vary by no more than | |$

b. Describe the distribution of the data.

The lower 25% of the prices are between | |$

and | |$

the middle 50% of the prices are between | |$

and $

and the upper 25% of the prices are between $

and | |$

c. Find and interpret the interquartile range of the data.

The interquartile range is | |

The middle half of the prices vary by no more than | |$

Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to