2nd Year Computer Second half Book Paper

Q1. Multiple choice questions (Attempt all · 15 × 1 = 15)

1. What is the basic formula used to calculate the Chi-Square (x²) test statistic?

   1. 

   2. 

   3. 

   4. 

2. How can AI bridge gaps in the healthcare sector?

   1. Store physical files

   2. Analyze medical data faster

   3. Route internet cables

   4. Generate financial taxes

3. How does antivirus software protect a system?

   1. By overloading external servers

   2. By creating fake websites to trick hackers

   3. By scanning files and removing viruses or malware

   4. By requiring physical fingerprint scans

4. On what are predictions in predictive modeling based?

   1. Guaranteed certainty

   2. Probability

   3. Fixed rules without variation

   4. Raw feature counts

5. If a new medical drug test yields a p-value of 0.01 against a significance level of 0.05, it implies that:

   1. The drug is completely ineffective

   2. The improvement is unlikely to be due to chance alone

   3. The null hypothesis must be retained

   4. The test statistic was calculated incorrectly

6. Transparency in agriculture supply chains can be improved using:

   1. Blockchain and cloud computing

   2. HTML and CSS

   3. GPS and Wi-Fi

   4. Python and Excel

7. Why is documenting a security problem and its solution important?

   1. It automatically encrypts all saved files

   2. It unlocks ransomware-encrypted data without payment

   3. It helps prevent the problem from happening again

   4. It turns public networks into private connections

8. Predicting a student's final grade using past marks, attendance, and study hours is an example of what?

   1. Causation

   2. Prediction

   3. Hyperparameter tuning

   4. Model validation

9. What can occur if test results are misinterpreted?

   1. Incorrect conclusions

   2. Higher prediction accuracy

   3. Automatic rejection of the null hypothesis

   4. Faster data processing speed

10. What negative impact can data misuse or invasion of privacy cause in communities?

    1. Faster network speeds

    2. Reduced storage needs

    3. Distrust and harm

    4. Lower device costs

11. The main danger of downloading unknown software is:

    1. Faster browsing

    2. Getting rewards

    3. Malware infection

    4. Extra storage

12. What is defined as the number of correctly predicted negative instances?

    1. True Positives (TP)

    2. True Negatives (TN)

    3. False Positives (FP)

    4. False Negatives (FN)

13. The critical region is the:

    1. Safe area

    2. Rejection area

    3. Data range

    4. Sample space

14. What technologies do farmers use alongside AI to monitor crops, increase yield, and reduce waste?

    1. Solar panels and satellite dishes

    2. Drones and sensors

    3. Robotic tractors and soil diggers

    4. Automatic sprayers and harvesters

15. What can copying online content without permission violate?

    1. Copyright laws

    2. Digital ethics

    3. Hardware guarantees

    4. Both a and b