ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


Statistics, Data, and Probability I Videos 30 videos

CAHSEE Math 1.1 Statistics, Data, and Probability I
406 Views

Statistics, Data, and Probability I: Drill Set 1, Problem 1. What is the mean yearly salary?

CAHSEE Math 1.2 Statistics, Data, and Probability I
198 Views

Statistics, Data, and Probability I: Drill Set 1, Problem 2. What is the median length of these writing utensils?

CAHSEE Math 1.3 Statistics, Data, and Probability I
209 Views

CAHSEE Math Statistics, Data, and Probability I: Drill Set 1, Problem 3. The mode of the number of days in each month for a single non-leap year is...

See All

CAHSEE Math 4.4 Statistics, Data, and Probability I 189 Views


Share It!


Description:

Statistics, Data, and Probability I: Drill Set 4, Problem 4. What is the probability of spinning the spinner once and getting a vowel or the letter T?

Language:
English Language

Transcript

00:03

Here's a shmoopy question for you...

00:05

Suppose the spinner shown below is fair, meaning

00:08

that each of the little pie slice shaped thingies have an equal chance of being landed upon.

00:13

Bethany's friends can't find the Twister board, so they're forced to use this thing.

00:17

What is the probability of her spinning the spinner once and getting a vowel or the letter T?

00:23

If she's successful, she'll get to put her foot right up against Greg's foot,

00:27

which would be just about the best thing ever.

00:30

Here are the potential answers:

00:34

OK, so what is this question asking?

00:36

Well, first, whether we can read something resembling a pie chart.

00:40

Second, the question is testing whether we understand how the word "OR" works in

00:43

these probability style questions.

00:46

When we have "OR", we ...ADD... meaning that the stuff before the OR and the stuff

00:51

after it get summed when we figure out the total probability quotient.

00:56

That is... if EITHER of the things on either side of the OR sign happen,

01:01

then we positively count the numbers involved.

01:04

So in this case, the first part -- before the OR -- is asking for the odds of spinning a vowel...

01:10

This part is pretty straightforward -- we can count 1 2 3 4 5 6 7 8 letters total...

01:15

and here are the vowels -- A and E...

01:18

...those are vowels and there are 2 of them.

01:21

So the odds of spinning a vowel on the first spin are... 2 out of 8.

01:26

But then the second part of the question adds the "OR ROLL A T" --

01:30

and there are 3 T's -- so we just... add.

01:34

Two vowels plus 3 T's and we get 5 potential YAY outcomes out of a total of 8.

01:40

And the answer is C.

01:41

Holla... Bethany gets the spin she was hoping for and is now getting close and personal with her crush.

Related Videos

CAHSEE Math 5.3 Algebra and Functions
2033 Views

CAHSEE Math: Algebra and Functions Drill 5, Problem 3. Solve the equation.

SAT Math 6.1 Geometry and Measurement
3974 Views

SAT Math 6.1 Geometry and Measurement

CAHSEE Math 3.4 Statistics, Data, and Probability I
363 Views

Statistics, Data, and Probability I: Drill Set 3, Problem 4. How many different avatars can be created based on the given options?

CAHSEE Math 3.2 Statistics, Data, and Probability II
224 Views

Statistics, Data, and Probability II Drill 3 Problem 2. Which two sports together make up for the preferences of more than half of all those w...

CAHSEE Math 3.3 Statistics, Data, and Probability II
198 Views

Statistics, Data, and Probability II Drill 3 Problem 3. One hundred twenty of those who were asked preferred what sport?