SOLUTION: In a recent survey 45% of students at a school said they love Italian ice. If the margin of error was 4.3%, then roughly how many students were surveyed?
A.) 973 students
B.) 5
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-> SOLUTION: In a recent survey 45% of students at a school said they love Italian ice. If the margin of error was 4.3%, then roughly how many students were surveyed?
A.) 973 students
B.) 5
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Question 1041689: In a recent survey 45% of students at a school said they love Italian ice. If the margin of error was 4.3%, then roughly how many students were surveyed?
A.) 973 students
B.) 535 students
C.) 133 students
D.) 243 students Answer by Edwin McCravy(20060) (Show Source):
The formula for the sample size is
(1-)(za/2/E)2
According to the empirical rule, approximately 95% of the data is within
2 standard deviations from the mean, so we will use za/2 = 2
Edwin
