Question

Select all the correct answers Water resource managers measured the concentration of mercury in a sample of 25 area rivers. Their results are shown in the histogram Number of Rivers U 0 9 8 7 Which statements are supported by the histogram? 000 6 5 +x 0.001 0.002 0.003 0.004 0.005 0.006 Mercury Concentration (mg/L) The median mercury concentration falls between 0.002 and 0.003 miligram/liter. The range of mercury concentrations did not exceed 0.006 milligram/liter The range of mercury concentrations was exactly 0.006 milligram/liter The mean mercury concentration falls between 0.001 and 0.002 miligram/liter A small proportion of rivers had a mercury concentration greater than 0.004 milligram/liter,​

Answer 1

The histogram supports the statement that the median mercury concentration falls between 0.002 and 0.003 milligram/liter. It also supports the statement that a small proportion of rivers had a mercury concentration greater than 0.004 milligram/liter.

Step-by-step explanation:

The histogram shows the concentration of mercury in the sample of 25 area rivers. Let's analyze each statement:

1. The median mercury concentration falls between 0.002 and 0.003 milligram/liter. This statement is supported by the histogram, as the middle value of the data falls between the given range.
2. The range of mercury concentrations did not exceed 0.006 milligram/liter. This statement is supported by the histogram, as the maximum value shown is 0.005 milligram/liter, which is less than 0.006 milligram/liter.
3. The range of mercury concentrations was exactly 0.006 milligram/liter. This statement is not supported by the histogram, as the maximum value shown is 0.005 milligram/liter, not exactly 0.006 milligram/liter.
4. The mean mercury concentration falls between 0.001 and 0.002 milligram/liter. This statement is not supported by the histogram, as the mean value is not directly shown in the histogram.
5. A small proportion of rivers had a mercury concentration greater than 0.004 milligram/liter. This statement is supported by the histogram, as there are bars representing rivers with mercury concentrations above 0.004 milligram/liter.