Mrs. Carter has 4 boxes of colored chalk. There are 30 pieces of chalk in each box.
1 answer:
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Given:
n = 40, sample size
Confidence level = 99% => z* = 2.58
, sample proportion.
By definition, the margin of error is
Answer:
According to Sarah's poll, she can conclude with 99% confidence level that 20% of the high school population is happy with the quality of the cafeteria food, with a margin of error of +/- 16.3%.
n = 40, sample size
Confidence level = 99% => z* = 2.58
By definition, the margin of error is
Answer:
According to Sarah's poll, she can conclude with 99% confidence level that 20% of the high school population is happy with the quality of the cafeteria food, with a margin of error of +/- 16.3%.