Binomial Distribution Recap Quiz

Which of the following is NOT TRUE about a random variable?

• A random variable is the numerical outcome of a random experiment.

• A random variable is represented by a capital letter (eg X).

• The weight of guinea pigs is an example of a random variable.

• A random variable must be discrete.

Given that X is a discrete random variable, which of the following is TRUE about X?

• X can take on any real values.

• X = 1, 2, 3, 4, 5, ...

• X can be binomial

• The sum of probabilities of X can be any value.

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Which of the following properties MUST BE satisfied in order for an experiment to be assumed as binomial experiment?

• The experiment must consists of n independent trials.

• The probability of success for each trial remains constant.

• Each trial has 2 outcomes, success or failure.

• All Options.

X is a binomial random variable. Which of the following denotes X correctly?

• X ~ B (p, n)

• X ~ (n, p)

• X ~ B (n, p)

• x ~ b (n, p)

Given that X is a binomial random variable, which of the following is NOT TRUE?

Y is a binomial random variable. Which DOES NOT represent “the probability that Y is more than 5 but at most 12"?

• 
• 
• 
• 

In GC, binompdf is to calculate P (X = x) while binomcdf is to calculate P (X < x ).

• True

• False

Given that Y ~ B ( 20,0.3 ). In GC, what do we key in for the respective parameters to calculate

P ( Y < 3 )?

• A

• B

• C

• D

A sample of 6 objects is to be drawn from a large population in which 20 out of 100 objects are defective. Find the probability that there are 4 defectives objects.

Which of the following is correct based on the above question?

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• 
• 
• 

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7