Students in a statistics class are conducting a survey to estimate the mean number of units students at their college are enrolled in. The students collect a random sample of 49 students. The mean of the sample is 12.2 units. The sample has a standard deviation is 1.6 units. What is the 95% confidence interval for the number of units students in their coll Assume that the distribution of individual student enrollment units at this college normal.
Added by Sarah W.
Close
Step 1
01, the standard deviation is 1.6, and the sample size is 49, we can plug in these values to find the margin of error. ** Show more…
Show all steps
Your feedback will help us improve your experience
Marc Lauzon and 95 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Students in a statistics class are conducting a survey to estimate the mean number of units students at their college are enrolled in. The students collect a random sample of 48 students. The mean of the sample is 12.4 units. The sample has a standard deviation of 1.7 units. What is the 95% confidence interval for the average number of units that students in their college are enrolled in? Assume that the distribution of individual student enrollment units at this college is approximately normal. ( , ) Your answer should be rounded to 2 decimal places.
Lucas F.
Prabhakar K.
Age of College Students Find the $90 \%$ confidence interval for the variance and standard deviation of the ages of seniors at Oak Park College if a random sample of 24 students has a standard deviation of 2.3 years. Assume the variable is normally distributed.
Confidence Intervals and Sample Size
Confidence Intervals for Variances and Standard Deviations
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD