A national survey of 1000 adult citizens of a nation found that 21% dreaded Valentine's Day.

The margin of error for the survey was 10.7 percentage points with 85% confidence.

Explain what this means.

Which statement below is the best explanation?

O A. In 85% of samples of adult citizens of the nation, the proportion that dreaded

Valentine's Day is between 0.103 and 0.317.

O

B. There is 85% confidence that 21% of the adult citizens of the nation dreaded

Valentine's Day

O

C. There is 85% confidence that the proportion of the adult citizens of the nation that

dreaded Valentine's Day is between 0.103 and 0.317.

O

D. There is 74.3% to 95.7% confidence that 21% of the adult citizens of the nation

dreaded Valentine's Day.

Ascientist studied a population of workers to determine whether verbal praise and/or tangible rewards affect employee productivity. in the study, some workers were offered verbal praise, some were offered tangible rewards (gift cards, presents, and some were offered neither. the productivity of each participant was measured throughout the study by recording the number of daily tasks completed by each employee. which inference might the scientists make based on the given information? a.) the number of daily tasks completed by each employee may influence the dependent variable, which is whether the employee receives verbal praise, tangible rewards, or neither. b.) verbal praise and/or tangible rewards may influence the independent variable, which is the number of daily tasks completed by each employee. c.) verbal praise and/or tangible rewards may influence the dependent variable, which is the number of daily tasks completed by each employee. d.) the dependent variables, which are verbal praise and tangible rewards, may influence the number of daily tasks completed by each employee.