QUESTION 5 proportion of adults who have purchased reusable cloth bags is A. 0.4
ID: 3338298 • Letter: Q
Question
QUESTION 5 proportion of adults who have purchased reusable cloth bags is A. 0.4383 to 0.4617 B. 0.361 to 0.539 C. 0.4046 to 0.4954 D.0.205 to 0.525 1. Which of the following survey questions is leading? A. Given the prevalence of identity theft, are you reluctant to provide credit card information online? B. Are you confident that any information you provide online is secure? C. Are you concerned about the security of online QUESTION 8 transactions? 1. One division of a large defense contractor manufactures telecommunication equipment for the military. This division reports that 12% of non-electrical components are reworked. Management wants to determine if this percentage is the same as the percentage rework for the company's electrical components. The Quality Control Department plans to check a random sample of the over 10,000 electrical components manufactured across all divisions. The resulting 95% confidence interval based on these data is 0758 to.1339. Which of the following is the correct interpretation? A. The percentage of electronic components that are D. Both A and B QUESTION 6 1. A recent poll of 120 adults who frequent the local farmer's market found that 54 have purchased reusable cloth bags for their groceries. Based on these data, what is the margin of error for a 95% confidence interval of the proportion of adults who have purchased reusable cloth bags? A. 0.45 B. 0.0454 C.0.075 D.0.089 reworked is between 7.6% and 13.4%. B. The margin of error for the true percentage of electrical components that are reworked is between 7.6% and 13 .4% electrical components are reworked. reworked electrical components that falls within 7.6% QUESTION 7 C. we are 95% confident that between 7.6% and 13.4% of 1. A recent poll of 120 adults who frequent the local farmer's D. All samples of size 450 will yield a percentage of market found that 54 have purchased reusable cloth bags for their groceries. The 95% confidence interval for the and 13.4%.Explanation / Answer
6)
The proportion of adults that have purchased reuable cloth bags is :
p = x/n = 54/120 = .45
7)
p = x/n = 54/120 = .45
The 95% Ci has a Z of 1.96
Therefore, the 95% CI is :
p +/- Z*sqrt(p*p'/n)
=.45 +/- 1.96*Sqrt(.45*.55/120)
=.361 to .539
B is the right answer.