Question

A student was asked to find a 98% confidence interval for the population proportion of students...

A student was asked to find a 98% confidence interval for the population proportion of students who take notes using data from a random sample of size n = 84. Which of the following is a correct interpretation of the interval 0.1 < p < 0.33?

Check all that are correct.

  • ____With 98% confidence, the proportion of all students who take notes is between 0.1 and 0.33.
  • ____The proprtion of all students who take notes is between 0.1 and 0.33, 98% of the time.
  • ____With 98% confidence, a randomly selected student takes notes in a proportion of their classes that is between 0.1 and 0.33.
  • ____There is a 98% chance that the proportion of the population is between 0.1 and 0.33.
  • ____There is a 98% chance that the proportion of notetakers in a sample of 84 students will be between 0.1 and 0.33.

Homework Answers

Answer #1

Given the 98% confidence interval for the population proportion of the students who takes notes is

0.1 < p < 0.33

Correct interpretation is

*  The proprtion of all students who take notes is between 0.1 and 0.33, 98% of the time.

*There is a 98% chance that the proportion of the population is between 0.1 and 0.33.

(Simple meaning of 98% confidence interval :

If we draw various samples of size n from the given population and we construct 98% confidence intervals using these samples , then 98% of these intervals would contain the true population parameter.)

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