The number of hospital beds in a sample of 20 hospitals is shown below. Construct a frequency distribution and a frequency histogram for the data set using 5 classes. Describe the shape of the histogram as symmetric, uniform, negatively skewed, positively skewed, or none of these. 172 165 126 127 181 160 165 222 149 142 3 194 203 147 249 263 243 286 139 208 179 Construct a frequency distribution for the data set using 5 classes. (Type whole numbers. Class Frequency 126-158 159-191 192-224 O 225-257 258-290