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Practice Workbook SE - East Penn School District

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Name<br />

LESSON 28.2<br />

More About Probability<br />

Use Data<br />

For 1–4, use the spinner and the table.<br />

SPINNER EXPERIMENT—100 SPINS<br />

Outcome W X Y Z<br />

Tally<br />

W<br />

Y<br />

X<br />

Z<br />

1. What is the mathematical<br />

probability of the pointer<br />

stopping on each letter on<br />

the spinner?<br />

2. Use the data in the table. Find the<br />

probability of the pointer stopping<br />

on each letter in the experiment.<br />

W<br />

Y<br />

W<br />

Y<br />

X<br />

Z<br />

3. Use the table to find the<br />

probability of the pointer<br />

stopping on W in the experiment.<br />

How does this compare to the<br />

mathematical probability?<br />

X<br />

Z<br />

4. Compare the probability in the<br />

experiment with the<br />

mathematical probability of the<br />

pointer stopping on X, Y, and Z.<br />

© Harcourt<br />

Mixed Review<br />

5. James is buying a new<br />

computer. He is choosing among<br />

3 different hard drives, 4<br />

different printers, and 5 modems.<br />

How many possible computer<br />

packages could he make?<br />

6. What kind of triangle is shown<br />

below?<br />

7 cm 7 cm<br />

6 cm<br />

<strong>Practice</strong><br />

PW153

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