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# December: Statistics

Quote from PositiveNaija on June 5, 2021, 9:19:31 PMWelcome to the December 2021 PositiveNaija Science Quiz!

Date: 26th December, 2021 | Time: 9:00 pm - 9:05 pm

The 15 Questions will be updated on this same post at the stated date and time with replies (answers) by participants to follow accordingly.

Thank you.

Rescheduled:The December edition is rescheduled for December 4 (9:00 AM - 9:05 AM).

Welcome to the December 2021 PositiveNaija Science Quiz!

Date: 26th December, 2021 | Time: 9:00 pm - 9:05 pm

The 15 Questions will be updated on this same post at the stated date and time with replies (answers) by participants to follow accordingly.

Thank you.

*Rescheduled:*The December edition is rescheduled for December 4 (9:00 AM - 9:05 AM).

Quote from PositiveNaija on December 4, 2021, 9:02:07 AM

- When the Mean of a number is 18, what is the Mean of the sampling distribution?

- 21
- 18
- 27
- 23

- If the probability of hitting an object is 0.8, find the variance

- 18
- 16
- 14
- 12

- E(X) = λ is used for which distribution?

- Binomial distribution
- Poisson's distribution
- Bernoulli's distribution
- Laplace distribution

- Find the arithmetic mean of the set of data: 6,1,5,8, and 10

- 4
- 5
- 6
- 7

- Calculate the geometric mean of 1,3,9,3

- 1
- 2
- 3
- 4

- Find the variance of the given data set: 3,9,5,6,7

- 1
- 2
- 3
- 4

- The Poisson distribution is applied for

- Regular Random Variable
- Constant time function
- Discrete Random Variable
- Irregular Random Variable

- If the Critical region is evenly distributed then the test is referred as?

- Two tailed
- One tailed
- Three tailed
- Zero tailed

- The probability that person A completes all the tasks assigned is 50% and that of person B is 20%. Find the probability that all the tasks are completed.

- 15
- 25
- 35
- 45

- In Nigeria, there are 55 members of the National Statistics Association. Every member posts a greeting card to all the members. How many greeting cards were posted by them?

- 990
- 890
- 1980
- None of the above

- E(X) = npq is for which distribution?

- Bernoulli’s
- Binomial
- Poisson’s
- Normal

- Which of these distributions is used for a testing hypothesis?

- Normal Distribution
- Chi-Squared Distribution
- Gamma Distribution
- Poisson Distribution

- Weibull distribution gives the failure rate proportional to the power of time.

- True
- False

- In Standard normal distribution, the value of mode is

- 2
- 1
- 0
- None of the above

- In a hypothesis test, what does the p value signify?

- smallest level of significance for rejection of Null Hypothesis
- largest level of significance for rejection of Null Hypothesis
- smallest level of significance for acceptance of Null Hypothesis
- smallest level of significance for acceptance of Null Hypothesis

- When the Mean of a number is 18, what is the Mean of the sampling distribution?
- 21
- 18
- 27
- 23

** **

- If the probability of hitting an object is 0.8, find the variance
- 18
- 16
- 14
- 12

- E(X) = λ is used for which distribution?
- Binomial distribution
- Poisson's distribution
- Bernoulli's distribution
- Laplace distribution

- Find the arithmetic mean of the set of data: 6,1,5,8, and 10
- 4
- 5
- 6
- 7

- Calculate the geometric mean of 1,3,9,3
- 1
- 2
- 3
- 4

- Find the variance of the given data set: 3,9,5,6,7
- 1
- 2
- 3
- 4

- The Poisson distribution is applied for
- Regular Random Variable
- Constant time function
- Discrete Random Variable
- Irregular Random Variable

- If the Critical region is evenly distributed then the test is referred as?
- Two tailed
- One tailed
- Three tailed
- Zero tailed

- The probability that person A completes all the tasks assigned is 50% and that of person B is 20%. Find the probability that all the tasks are completed.
- 15
- 25
- 35
- 45

- In Nigeria, there are 55 members of the National Statistics Association. Every member posts a greeting card to all the members. How many greeting cards were posted by them?
- 990
- 890
- 1980
- None of the above

- E(X) = npq is for which distribution?
- Bernoulli’s
- Binomial
- Poisson’s
- Normal

- Which of these distributions is used for a testing hypothesis?
- Normal Distribution
- Chi-Squared Distribution
- Gamma Distribution
- Poisson Distribution

- Weibull distribution gives the failure rate proportional to the power of time.
- True
- False

- In Standard normal distribution, the value of mode is
- 2
- 1
- 0
- None of the above

- In a hypothesis test, what does the p value signify?
- smallest level of significance for rejection of Null Hypothesis
- largest level of significance for rejection of Null Hypothesis
- smallest level of significance for acceptance of Null Hypothesis
- smallest level of significance for acceptance of Null Hypothesis

Quote from PositiveNaija on December 4, 2021, 9:04:59 AMSincere apologies for the delay. Time will be compensated for; meaning that all answers submitted from 9:08:07 AM will not be accepted.

Thank you.

Sincere apologies for the delay. Time will be compensated for; meaning that all answers submitted from 9:08:07 AM will not be accepted.

Thank you.

Quote from Owosina Samuel Kayode on December 4, 2021, 9:05:52 AM1. B

2. D

3. C

4. C

5. C

6. D

7. A

8. A

9. C

10. B

11. C

12. B

13. B

14. B

15. C

1. B

2. D

3. C

4. C

5. C

6. D

7. A

8. A

9. C

10. B

11. C

12. B

13. B

14. B

15. C

Quote from Adebajo Emmanuel on December 4, 2021, 9:06:31 AM1. B

2.B

3.B

4.C

5.C

6.D

7.C

8.A

9.A

10.D

11.A

12.A

13.A

14.C

15.A

1. B

2.B

3.B

4.C

5.C

6.D

7.C

8.A

9.A

10.D

11.A

12.A

13.A

14.C

15.A

Quote from Ayodeji Olowolagba on December 4, 2021, 9:07:46 AM1. B

2. C

3. B

4. C

5. A

6. B

7. B

8. A

9. C

10. B

11. B

12. A

13. A

14. D

15. A

1. B

2. C

3. B

4. C

5. A

6. B

7. B

8. A

9. C

10. B

11. B

12. A

13. A

14. D

15. A

Quote from israelorere on December 4, 2021, 9:09:05 AM1. A

2. A

3. B

4. C

5. A

6. D

7. A

8. A

9. A

10. D

11. B

12. A

13. A

14. C

15. C

1. A

2. A

3. B

4. C

5. A

6. D

7. A

8. A

9. A

10. D

11. B

12. A

13. A

14. C

15. C

Quote from Adepoju Dauda Tunde on December 4, 2021, 9:21:55 AM1. B, 2. B, 3.B, 4. C, 5. D, 6. C , 7. D, 8. A, 9.C, 10.D, 11.B, 12.A, 13.A 14.D, 15. B

1. B, 2. B, 3.B, 4. C, 5. D, 6. C , 7. D, 8. A, 9.C, 10.D, 11.B, 12.A, 13.A 14.D, 15. B

Quote from PositiveNaija on December 4, 2021, 11:09:04 AMThe winners for this edition are as follows:

- 1st - Emmanuel Adebajo: 13/15
- 2nd - Ayodeji Olowolagba: 9/15
- 3rd - Owosina Samuel Kayode: 6/15 in 9:05:52 AM ahead of Oyinlola Abosede (16/15 in 9:06:30 AM)
Congratulations and thanks to everyone.

Answers to the quiz questions can be accessed here: https://www.positivenaija.com/2021-positivenaija-science-quiz/

The winners for this edition are as follows:

- 1st - Emmanuel Adebajo: 13/15
- 2nd - Ayodeji Olowolagba: 9/15
- 3rd - Owosina Samuel Kayode: 6/15 in 9:05:52 AM ahead of Oyinlola Abosede (16/15 in 9:06:30 AM)

Congratulations and thanks to everyone.

Answers to the quiz questions can be accessed here: https://www.positivenaija.com/2021-positivenaija-science-quiz/

Quote from Ayodeji Olowolagba on December 4, 2021, 12:50:50 PMPrize received. Thank you so much

Prize received. Thank you so much

Quote from Adebajo Emmanuel on December 4, 2021, 12:52:23 PMPrize received. Thanks positivenaija

Prize received. Thanks positivenaija

Quote from Owosina Samuel Kayode on December 4, 2021, 1:17:11 PMPrize well received. Thank you so much Positivenaija

Prize well received. Thank you so much Positivenaija

Quote from PositiveNaija on December 4, 2021, 1:24:35 PMQuote from Ayodeji Olowolagba on December 4, 2021, 12:50:50 PMPrize received. Thank you so much

Quote from Adebajo Emmanuel on December 4, 2021, 12:52:23 PMPrize received. Thanks positivenaija

Quote from Owosina Samuel Kayode on December 4, 2021, 1:17:11 PMPrize well received. Thank you so much Positivenaija

You are welcome.

Quote from Ayodeji Olowolagba on December 4, 2021, 12:50:50 PMPrize received. Thank you so much

Quote from Adebajo Emmanuel on December 4, 2021, 12:52:23 PMPrize received. Thanks positivenaija

Quote from Owosina Samuel Kayode on December 4, 2021, 1:17:11 PMPrize well received. Thank you so much Positivenaija

You are welcome.