Aisha has a piece of string that she cuts into smaller pieces. This line plot shows the length of each piece. Juan has a piece o
f string that is 12 as long as Aisha's seventh-longest piece. (Note: The problem states the seventh-longest piece, not the seventh-longest length.)
How long is Juan's piece of string?
Enter your answer as a mixed number in simplest form by filling in the boxes.
How long is Juan's piece of string?
Enter your answer as a mixed number in simplest form by filling in the boxes.
1 answer:
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Answer:
a) Sample size = 822
b) Margin of error = 0.03407
Step-by-step explanation:
We are given the following in the question:
p = 74% = 0.74
a) Sample size is required to obtain margin of error of 0.03
Formula:
Putting values, we get,
Thus, the sample size must be approximately 822 to obtain a 95% confidence interval with an approximate margin of error of 0.03
b) Margin of error for the 95% confidence interval
p = 54% = 0.54
Formula:
Putting values, we get,
The margin of error now will be 0.03407.