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Extra Practice: Homogeneous Groups and Expected Number

Last updated over 5 years ago

11 Nsɛmmisa

3

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1.

If you have a group of 400 12th grade students (boys and girls who had ridden a bicycle during the previous 12 months), how many would you expect to say that yes, they wore a bicycle helmet? Include all calculations to support your answer.

5

3

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2.

If you have a group of 350 adults, how many would you expect to prefer Sprite? Include your calculations to support your answer.

1

2

1

2

1

2

1

2

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11.

Determine if the three groups (Division I, Division II, and Division III) are homogeneous (HINT: compare proportions). Clearly label your work and include all calculations to support your answer.

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3.

What proportion of students at Delcastle are Freshmen?

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4.

What is the expected number of students in the sample of 250 who will be Freshmen? Include your calculations with your final answer.

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5.

What proportion of students at Delcastle are Sophomores?

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6.

What is the expected number of students in the sample of 250 who will be Sophomores? Include your calculations with your final answer.

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7.

What proportion of students at Delcastle are Juniors?

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8.

What is the expected number of students in the sample of 250 who will be Juniors? Include your calculations with your final answer.

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9.

What proportion of students at Delcastle are Seniors?

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10.

What is the expected number of students in the sample of 250 who will be Seniors? Include your calculations with your final answer.