Question

predicting success
planetplan has done several cleanup projects in multiple reefs over the years. theyve also gotten some data from other organizations about success rates.
table view
review the data and calculate the probability that if you picked one of these projects at random, it would have been a success.
successful events * indicates a required field
input successful events
we want all successful events from planetplan and other organizations.
the number must be higher than the minimum value required
the number must be lower than the maximum value required
total events * indicates a required field
input total events
we want all events from planetplan and other organizations.
calculate

Answer:

To calculate the probability, we first need to determine the number of successful events and the total number of events from the bar graph.

Step 1: Identify Successful Events

• From the graph, the “Successful” bar has two parts:
• PlanetPlan Projects (blue): Let's assume the height is ~10 (since the blue part is small, but the green part for other organizations is ~140). Wait, actually, the green part (Other Organizations) for “Successful” is ~140, and the blue part (PlanetPlan) is ~10? Wait, no—looking at the y - axis: the green bar (Successful, Other Organizations) reaches up to ~140, and the blue bar (Successful, PlanetPlan) is small (maybe 10? Wait, the y - axis labels: 0, 20, 40, 60, 80, 100, 120, 140, 160. Wait, the “Successful” bar (green + blue? No, the legend: blue is PlanetPlan Projects, green is Other Organization Projects. So for “Successful”:
• PlanetPlan (blue): height ~10 (since it's a small blue bar at the bottom of the green bar? Wait, no—the green bar for “Successful” is tall (up to 140), and the blue bar is a small strip at the bottom (maybe 10). Wait, no, maybe the “Successful” category: the green part (Other Organizations) is 140, and the blue part (PlanetPlan) is 10? Wait, no, the y - axis: the “Successful” bar (green) is at 140, and the “Unsuccessful” bar (green) is at 20. Wait, maybe I misread. Let's re - examine:

Wait, the bar graph:

• “Successful” has two segments: blue (PlanetPlan) and green (Other Organizations). The green part (Other Organizations) for “Successful” is from 0 to ~140, and the blue part (PlanetPlan) is from 0 to ~10? No, maybe the blue part is the PlanetPlan successful, and green is other organizations successful. So total successful events = PlanetPlan successful + Other Organizations successful.

Looking at the y - axis, the green bar (Other Organizations, Successful) is at 140, and the blue bar (PlanetPlan, Successful) is at 10 (since it's a small blue strip). Wait, no—maybe the “Successful” bar (green) is 140 (Other Organizations) and the blue bar (PlanetPlan) is 10, so total successful events = 10 + 140 = 150? Wait, no, the y - axis: the “Successful” bar (green) is up to 140, and the “Unsuccessful” bar (green) is up to 20. Wait, maybe the “Successful” total is 140 (Other Organizations) + 10 (PlanetPlan) = 150? And total events: successful + unsuccessful. Unsuccessful: Other Organizations is 20 (green bar), and PlanetPlan? Wait, the “Unsuccessful” bar: green (Other Organizations) is 20, and is there a blue bar? The legend shows blue is PlanetPlan, green is Other Organizations. So “Unsuccessful” has green (Other Organizations) at 20, and maybe PlanetPlan has 0? So total events = successful (150) + unsuccessful (20) = 170? Wait, this is confusing. Alternatively, maybe the “Successful” bar (green) is 140 (Other Organizations) and PlanetPlan successful is 0? No, the blue bar is present. Wait, maybe the y - axis is labeled with the green bar (Other Organizations) for “Successful” at 140, and the blue bar (PlanetPlan) at 10, so successful events = 10 + 140 = 150. Unsuccessful events: Other Organizations is 20 (green bar), and PlanetPlan is 0 (since no blue bar in “Unsuccessful”). So total events = 150 + 20 = 170.

Step 2: Identify Total Events

Total events = successful events + unsuccessful events.
If successful events = 150 (10 + 140) and unsuccessful events = 20 (Other Organizations) + 0 (PlanetPlan) = 20, then total events = 150 + 20 = 170.

Step 3: Calculate Probability

Probability = $\frac{\text{Successful Events}}{\text{Total Events}}$

If we take successful events = 150 and total events = 170, then probability = $\frac{150}{170}=\frac{15}{17}\approx0.882$ (or 88.2%).

But wait, maybe I misread the graph. Let's try again:

Wait, the “Successful” bar: the green part (Other Organizations) is at 140, and the blue part (PlanetPlan) is at 10 (since the blue bar is a small strip at the bottom of the green bar). The “Unsuccessful” bar: green part (Other Organizations) is at 20, and no blue bar (PlanetPlan has no unsuccessful? Unlikely). Alternatively, maybe the “Successful” bar (green) is 140 (Other Organizations) and PlanetPlan successful is 0, so successful events = 140. Unsuccessful events: Other Organizations is 20, so total events = 140 + 20 = 160. Then probability = $\frac{140}{160}=\frac{7}{8}=0.875$ (87.5%).

But the key is:

1. Find successful events: sum of PlanetPlan successful and Other Organizations successful. From the graph, the green bar (Other Organizations) for “Successful” is ~140, and the blue bar (PlanetPlan) is ~10 (assuming). So successful events = 10 + 140 = 150.
2. Find total events: successful (150) + unsuccessful (20, from Other Organizations) + PlanetPlan unsuccessful (0, if no blue bar in “Unsuccessful”). So total events = 150 + 20 = 170.
3. Probability = $\frac{150}{170}\approx0.882$ (or 88.2%).

To proceed with the calculation in the input fields:

• Input “successful events” as 150 (if we take the above assumption).
• Input “total events” as 170.
• Then click “Calculate” to get the probability $\frac{150}{170}\approx0.882$ (or 87.5% if successful events is 140 and total is 160).

(Note: The exact values depend on the precise heights of the bars. If the blue bar (PlanetPlan successful) is 0, then successful events = 140, total events = 140 + 20 = 160, and probability = $\frac{140}{160}=0.875$.)