A sociologist plans to conduct a survey to estimate the percentage of healthcare professionals who believe in astrology. How many healthcare professionals must be surveyed if we want a confidence level of 92% and a margin of error of three percentage points? (NOTE: All areas are to four decimal places and all z-scores are to two decimal places except the two special cases at the bottom of the table) Insert the following values from the question: CL = Answer% E = Answer% = Answer What area relates to the confidence level? A = Answer What is the value of α? Answer What is the value of α/2? Answer What area value will you use on the z-score table? Answer What is the zα/2 value associated with that area? Answer Use the appropriate formula to find the number of people that must be tested (round up to a whole number):
A sociologist plans to conduct a survey to estimate the percentage of healthcare professionals who believe in astrology. How many healthcare professionals must be surveyed if we want a confidence level of 92% and a margin of error of three percentage points?
(NOTE: All areas are to four decimal places and all z-scores are to two decimal places except the two special cases at the bottom of the table)
Insert the following values from the question:
CL = Answer%
E = Answer% = Answer
What area relates to the confidence level?
A = Answer
What is the value of α? Answer
What is the value of α/2? Answer
What area value will you use on the z-score table? Answer
What is the zα/2 value associated with that area? Answer
Use the appropriate formula to find the number of people that must be tested (round up to a whole number):
Answer
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