STA301 Quiz 3 by VU Topper RM

Q1. Vu-Topper RM (1 marks)

Uniform distribution is a: Mixed

None of these

Q2. Vu-Topper RM (1 marks)

A confidence interval has a specified probability__________ of containing the true value of the parameter. A. α

B. 1- α

C. 1+ α D. α/2

Q3. Vu-Topper RM (1 marks)

When the event occur randomly over a specified interval of time, space or length; the distribution is known as:

A. Poisson Process Page 217

B. None of the above C. Poisson Distribution D. Hyper geometric distribution

Q4. Vu-Topper RM (1 marks)

Which of the following is true for the Poisson distribution: A. mean > variance B. mean < variance

C. mean = variance Page 233

D. mean = standard deviation

Q5. Vu-Topper RM (1 marks)

Poisson distribution is the limiting form of binomial distribution when n, the number of trials is large and p, the probability of success is

A. very Small Google

B. Very large C. Moderately small D. Moderately large

Q6. Vu-Topper RM (1 marks)

The standard normal distribution has it mean and variance equal to: A. 0 and 0 respectively B. 1 and 1 respectively

C. 0 and 1 respectively Google

D. 1 and 0 respectively

Q7. Vu-Topper RM (1 marks)

When an interval is constructed, what is the probability of occurrence of parameter in it?

1. 1
2. 0
3. 50
4. Either 1 or 0 Page 263

Correct answer: Either 1 or 0 Page 263

Q8. Vu-Topper RM (1 marks)

When we draw the sample with replacement, the probability distribution to be used is: A. Poisson

B. Binomial

C. Hypergeometric D. Binomial & hypergeometric

Q9. Vu-Topper RM (1 marks)

For the Poisson distribution P(X = 1) = e−0.1350.13511! the mean value is: A. 1

B. 0.135 Page 222

C. -0.135 D. e−0.135

Q10. Vu-Topper RM (1 marks)

A quantity obtained by applying certain rule or formula is known as

A. Estimate Page 264

B. Estimator C. Parameter D. Proportion

Q11. Vu-Topper RM (1 marks)

A random sample of n = 6 has the elements 6, 10,13,14,18 and 20. What is the point estimate of the population mean?

1. 11
2. 12
3. 11.5
4. 13.5

Correct answer: 13.5

Q12. Vu-Topper RM (1 marks)

An urn contains 4 red balls and 6 green balls. A sample of 4 balls is selected from the urn without replacement. It is the example of: A. Binomial distribution

B. Hypergeometric distribution Page 219

C. Poisson distribution D. Exponential distribution

Q13. Vu-Topper RM (1 marks)

A statistic whose standard error decreases with an increase in the sample size will be ...... A. None B. Efficient C. Unbiased