
Estimation Parameter for Population Proportion
Authored by raffy cee
Mathematics
11th Grade
Used 3+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A sample of 400 racing cars showed that 80 cars cost over $700,000. What is the 99% confidence interval of the true proportion of cars costing over $700,000?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A recent study of 750 Internet users in Europe found that 35% of Internet users were women. What is the 95% confidence interval of the true proportion of women in Europe who use the Internet?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A survey of 800 women shoppers found that 17% of them shop on impulse. What is the 98% confidence interval for the true proportion of women shoppers who shop on impulse?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A research company wants to estimate the proportion of people who like oatmeal. They want the confidence level to be 95%. The company gets 325 people to sign up for the survey, but on the day that the survey is issued, only 250 people show up and take the survey. What happens to the confidence interval?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A random sample of 100 WHS students found that 53 of them were in possession of a pencil. What is the p-hat for this sample?
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
It was found that in a sample of 90 teenage boys, 70% of them have received speeding tickets. What is the 90% confidence interval of the true proportion of teenage boys who have received speeding tickets?
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
In a survey of 104 students, it was found that 79 went to the homecoming game this year.
Calculate a 99% confidence interval for p.
(0.652, 0.868)
(0.691, 0.829)
(0.678, 0.842(
(0.685, 0.895)
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