Stats: Review Chapter 9 - Random Variables

Stats: Review Chapter 9 - Random Variables

12th Grade

19 Qs

quiz-placeholder

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Stats: Review Chapter 9 - Random Variables

Stats: Review Chapter 9 - Random Variables

Assessment

Quiz

Mathematics

12th Grade

Practice Problem

Hard

CCSS
HSS.CP.A.1, HSS.MD.A.1, HSS.MD.A.2

+13

Standards-aligned

Created by

Diana Boehmer

Used 2+ times

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19 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

Suppose you toss a fair coin 4 times. Let X = the number of heads you get. Find the probability distribution of X (in order).

X = 1, 2, 3, 4

X = 0, 1, 2, 3, 4

P(X) = 0.0625, 0.25, 0.375, 0.25, 0.0625

P(X) = 0.071, 0.286, 0.286, 0.286, 0.071

P(X) = 0.5, 0.25, 0.125, 0.0625

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

2.

FILL IN THE BLANK QUESTION

15 mins • 1 pt

Media Image

Suppose you toss a fair coin 4 times. Let X = the number of heads you get. Find P(X ≤ 3).

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.CP.B.7

CCSS.HSS.MD.A.3

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

Suppose you toss a fair coin 4 times. Let X = the number of heads you get. Describe the probability, P(X ≤ 3), in words.

There is a 93.75% chance of flipping 3 heads.

There is a 93.75% chance of flipping no heads.

There is a 93.75% chance of flipping less than 4 heads.

There is a 0.9375% chance of flipping less than 4 heads.

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.CP.B.7

4.

MULTIPLE SELECT QUESTION

15 mins • 1 pt

Media Image

If X = the number of televisions in a randomly selected U.S. household, the probability distribution of X is given here. Is X a discrete or a continuous random variable? Explain.

Discrete

Continuous

There are gaps between the values of X.

There are no gaps between the values of X.

Tags

CCSS.HSS.MD.A.1

5.

FILL IN THE BLANK QUESTION

15 mins • 1 pt

Media Image

If X = the number of televisions in a randomly selected U.S. household, the probability distribution of X is given here. Find P(X < 2).

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.MD.A.1

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

If X = the number of televisions in a randomly selected U.S. household, the probability distribution of X is given here. Describe the probability, P(X < 2), in words.

There is a 0.28% chance that a randomly selected US home has less than 2 tv's.

There is a 28% chance that a randomly selected US home has no more than 1 tv.

There is a 28% chance that a randomly selected family has no more than 1 tv.

There is a 61.1% chance that a randomly selected US home has less than 2 tv's.

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.IC.A.1

CCSS.HSS.MD.A.1

7.

FILL IN THE BLANK QUESTION

15 mins • 1 pt

Media Image

If X = the number of televisions in a randomly selected U.S. household, the probability distribution of X is given here. What is the probability that a randomly selected household has at least 2 televisions?

Tags

CCSS.HSS.CP.A.1

CCSS.HSS.CP.B.7

CCSS.HSS.MD.A.1

CCSS.HSS.MD.A.3

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