Random Variable and Probability Distribution, Mean and Variance

Random Variable and Probability Distribution, Mean and Variance

11th Grade

12 Qs

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Random Variable and Probability Distribution, Mean and Variance

Random Variable and Probability Distribution, Mean and Variance

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Hard

Created by

Anthony Clark

Used 1+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Classify the following random variables as discrete or continuous.

Discrete

Continuous

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Determine the values of the random variables in each of the following distributions.

Two coins are tossed. Let T be the number of tails that occur. Determine the values of the random variable T.

0

1

2

0,1,2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is another name for normal distribution?

Gaussian distribution

Poisson distribution

Bernoulli’s distribution

Probability distribution

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A group of 625 students has a mean age of 15.8 years with a standard deviation of 0.6 years. The ages are normally distributed. What is the probability that a randomly selected student is older than 16.5 years old?

0.864

0.879

0.121

None of these

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The mean and standard deviation of a population are 400 and 40, respectively. Sample size is 25. 
What is the mean of the sampling distribution?

400

40

25

8

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The mean and standard deviation of a population are 400 and 40, respectively. Sample size is 25. 
What is the standard error of the sampling distribution?

400

40

25

8

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

These symbols represent the mean and standard deviation for which of the following distributions?

The Population

The Sample

The Sampling Distribution

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