Based on Zarina's work, what can be concluded?
Zarina wants to determine a confidence interval based on a
random poll she conducted about the percent of attendees
at a conference who are vegetarian She determined the
margin of error for her poll results using the equation
below
Confidence
Level (%)
95
z-score
1646
196
2 58
E = 1.96, 0.3(1 -0.3)
540
With 90% confidence, between 4% and 30% of the
attendees are vegetarian
With 90% confidence, between 26% and 34% of the
attendees are vegetarian
With 95% confidence, between 4% and 30% of the
attendees are vegetarian
With 95% confidence, between 28% and 34% of the
attendees are vegetarian
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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.