Random Variables

Random Variables

12th Grade

28 Qs

quiz-placeholder

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Random Variables

Random Variables

Assessment

Quiz

Mathematics

12th Grade

Medium

Created by

Shelli Ryan

Used 3+ times

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28 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

State whether it is Discrete or Continuous;

A film critic's rating of a film, 0 to 4 stars

Discrete

Continuous

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

State whether it is Discrete or Continuous;

The speed of a car

Discrete

Continuous

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

State whether it is Discrete or Continuous;

The sum rolled on a pair of dice

Discrete

Continuous

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

State whether it is Discrete or Continuous;

the amount of water in different types of fruit drink

Discrete

Continuous

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The table above shows the number of cell phones per household in a small town. Find the mean round to the nearest hundredth.

2.80

2.93

0.10

0.14

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

A stockbroker estimates that at the end of the year, there is a 40% chance a stock will be worth $50, a 35% chance it will be worth $60 and a 25% chance it will be worth $70.
What expected value does this broker assign to this stock's end-of-the-year price?

$58.50
$60.00
$62.50
$65.00

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In a certain community, 30% of households have 1 child, 43% have 2 children, and 27% have 3 children. If a household is selected at random, what is the expected number of children in that household? HINT: A Probability table may be helpful.

2.00
2.13
1.97
1.27

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