Inferences and Predictions

Question 1

The manager of a movie theater wants to know what types of movies his customers prefer to watch. Which sample would most likely provide the most accurate data?

Revolt · Accepted Answer

a random group of 30 people people at a mall

Question 2

Why is it important to avoid a smaller sample size?Smaller sample sizes can be harder to acquire.Smaller sample sizes can be impossible to show in a graph.✔ Smaller sample sizes may not be representative of the population.Smaller sample sizes always give representative data.

Revolt · Accepted Answer

✔ Smaller sample sizes may not be representative of the population.

Question 3

Question 3

Revolt · Accepted Answer

1/6; Most students participate in after-school activities.

Question 4

The local school board needs to choose whether to build an addition to the elementary school library or remodel the high school basketball court. Which sampling option might the board choose to survey the community?a random sample of 10% of all basketball players✔ a random sample of 10% of all taxpayersa random sample of 10% of all the people in the town librarya random sample of 10% of elementary school students

Revolt · Accepted Answer

✔ a random sample of 10% of all taxpayers; a random sample of 10% of all taxpayers; Smaller sample sizes may not be representative of the population.

Question 5

Which statements are true? Check all that apply.

Revolt · Accepted Answer

The second sample is likely to be more representative of the population.; The second sample will give a better representation because it is larger.; Community members probably visit the dentist about once every 18 months.

Question 6

What is the mean total household of the 7th-grade sample to the nearest tenth? 44.1✔ 4.38.6

Revolt · Accepted Answer

✔ 4.3; 4.3; 4.5

Question 7

From the data and by calculating the mean, which inferences could Sharon make?

Revolt · Accepted Answer

An average 7th-grade student owns around 3 pairs of sneakers.

Question 8

What is the ratio of the number of students not participating in an activity to the total number of students surveyed? 1/12✔ 1/65/24 1/4

Revolt · Accepted Answer

✔ 1/6; 1/6; Most students participate in after-school activities.

Question 9

What is the mean total household of the 8th-grade sample to the nearest tenth? 4.3✔ 4.559.0

Revolt · Accepted Answer

✔ 4.5

Question 10

What can you infer from this data? About 5 of every 6 students do not do anything after school.Exactly 16% of students participate in after-school activities. Exactly 5 of 6 students are in after-school activities.✔ Most students participate in after-school activities.

Revolt · Accepted Answer

✔ Most students participate in after-school activities.

Inferences and Predictions Answers

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