In: Statistics and Probability
A survey of 200 students is selected randomly on a large
university campus They are asked...
- A survey of 200 students is selected randomly on a large
university campus They are asked if they use a laptop in class to
take notes. The result of the survey is that 70 of the 200 students
use laptops to take notes in class.
- What is the value of the sample proportion? (0.5
pts)
- What is the standard error of the sampling proportion?
(0.5 pts)
- Construct an approximate 95% confidence interval for the true
proportion by going 2 standard errors from the sampling proportion.
(1 pt)
- How would the confidence interval have changed if the
confidence level was 90% instead of 95%? (1
pt)
- How would the confidence interval have changed if the sample
size had been 100 instead of 200? (1
pt)