Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 15:Two-Way Tables; Mixed Review


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Selected Response

The table gives data on the length of time that teachers at Tenth Avenue School have taught. Use the table for Exercises 1–5.

  • Question 1 (request help)

    How many female teachers have taught for fewer than 10 years?
    • 4
    • 9
    • 21
    • 30
  • Question 2 (request help)

    What is the relative frequency of teachers who have taught for 10 or more years?
    • 10%
    • 25%
    • 30%
    • 60%
  • Question 3 (request help)

    What is the relative frequency of having taught for fewer than 10 years among male teachers?
    • 0.09
    • 0.225
    • 0.6
    • 1.50
  • Question 4 (request help)

    What is the joint relative frequency of female teachers who have taught for more than 10 years?
    • 4%
    • 10%
    • 16%
    • 25%
  • Question 5 (request help)

    What is the marginal relative frequency of teachers who are female?
    • 0.16
    • 0.25
    • 0.4
    • 0.625
  • Question 6 (request help)

    A triangle has an exterior angle of \(\text{x}^\text{o}\). Which of the following represents the measure of the interior angle next to it?
    • \((180 - \text{x})^\text{o}\)
    • \( (\text{x} - 180)^\text{o}\)
    • \((90 - \text{x})^\text{o}\)
    • \( (\text{x} - 90)^\text{o}\)
  • Question 7 (request help)

    What is the volume of a cone that has a diameter of 12 cm and a height of 4 cm? Use 3.14 for \(\pi\) and round to the nearest tenth.
    • \(25.12 \text{ cm}^ 3\)
    • \(602.88 \text{ cm}^ 3\)
    • \(150.72 \text{ cm}^ 3\)
    • \(1,808.64\text{ cm}^ 3\)

Mini-Task

  • Question 8 (request help)

    The table gives data on books read by members of the Summer Reading Club.

    a. Find the relative frequency of a club member reading fewer than 25 books.
  •     %
  • Question 8 (request help)

    b. Find the relative frequency of reading fewer than 25 books among girl club members.
  •     %
  • Question 8 (request help)

    c. Is there an association between being a girl and reading fewer than 25 books? Explain.
  •    

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