Pandas: The size of the home ranges (in square kilometers) of several pandas were surveyed over a year's time, with the following results.
Home Range Frequency
28. Life of Light Bulbs: A certain type of light bulb has an average life of 500 hours, with a standard deviation of 100 hours. The length of life of the bulb can be closely approximated by a normal curve. An amusement park buys and installs 10,000 such bulbs.
Find the shortest and longest lengths of life for the middle 80% of the bulbs.
See attached file for full problem description.
9.1 - Question #40
9.3 - Question #28
For #40, I made the chart in Excel. A histograph is a bar chart in which the height of the bars represents the frequency for each category (this is in pink in the chart). A frequency polygon is made by connecting the points that have the center of the category intervals as their x-coordinate and the frequency as their y-coordinate (this is in blue in the chart).
For #28, the text is also in the ...