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Chapter 5 MWF

Authored by Lythia Amoakon

University

Used 15+ times

Chapter 5 MWF
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18 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

Media Image

Who Said It?

Stupidity got us into this mess, and stupidity will get us out.

Homer Simpson

Peter Griffin

D'Oh!

2.

CATEGORIZE QUESTION

1 min • 1 pt

What is a discrete variable? What is a continuous variable?

Groups:

(a) Discrete

,

(b) Continuous

Can Take any values in an interval

Measurable

Whole Numbers ONLY

Fractions

Example: Height

Countable

Example: Number of Cars

Whole Numbers, decimals

Can be listed

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

We flip a coin twice.

The sample space is {HH, HT, TH, TT}

What is the probability of each outcome?

0.25 for each outcome
0.5 for each outcome
0.75 for each outcome
1 for each outcome

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

We flip a coin twice.

The sample space is {HH, HT, TH, TT}

What is P(X=1 Head)?

1/4
1/2
3/4
1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Let x = the number of days a person used a drive-thru in a given week.

Is this a legitimate probability distribution? Why? Why not?

Yes, because the sum of all probabilities is equal to 1.

No, because the number of days a person used a drive-thru in a week can be more than 7, which is not a finite number of outcomes.

Yes, because the number of days a person used a drive-thru in a week is between 0 and 7, which is a finite number of outcomes.

No, because the number of days a person used a drive-thru in a week can be negative, which is not a finite number of outcomes.

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Let x = the number of days a person used a drive-thru in a given week.

What is the probability that someone randomly selected went through the drive-thru no more than 3 days?

P(X≤3) = 0.8

P(X≤3) = 0.6

P(X<3) = 0.6

P(X>3) = 0.2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the complement of event A and its probability?

Event B and its probability

Event Ac and 1 minus the probability of event A

Ac and half the probability of A

Ax and 1 minus the probability of event A

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