Please lay out all work required for the question B. 0.3483 C. 0.6517 D. 0.9987
ID: 3359755 • Letter: P
Question
Please lay out all work required for the question B. 0.3483 C. 0.6517 D. 0.9987 E. Not enough information for a valid answer. Question 14. The Canadian Cyber Incident Response entre (CCIRC, an arms' length organization of the government of Canada) believes that 93% of WiFi-enabled device owners have anti-virus programs installed on their device. However, in a sample of 400 investigated devices, 96% had anti-virus programs. The CCIRC wants to use a 95% confidence interval to es that have anti-virus programs installed, based on their sample data. Which of the following conditions is/are required for the appropriate confidence interval, and is valid for this scenario? timate the percentage of WiFi-enabled devices 1. 2. 3. 4. The sample size is at least 50. The sample data comes from a simple random sample. The binomial conditions are met. The Normal approximation is appropriate A. 1, 2, and 3 B. 2 and 4 C. 1 and 3 D. 4 only E. 1, 2, 3, and 4Explanation / Answer
E. 1,2,3 and 4.
All of the above statement conditions are required for the construction of confidence intervals for a proportion test.
In general 1,2 and 4 always need to be valid for the construction of confidence interval for data from any distribution. However, for a proportion test or for data from binomial population, condition 3 also need to be satisfied in order to construct a confidence interval.