1
answer
0
watching
13
views
9 Sep 2020
2. 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 128 of the
200 students responded ”yes."
A. Find 98% confidence interval
B. How would the confidence interval change if the
confidence level had been 90% instead of 98%?
C. How would the confidence interval change if the
sample size had been 300 instead of 200? (Assume the same sample
proportion.)
D. How large would the sample size have to be to
make the margin of error one fourth as big in the 98% confidence
interval?
2. 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 128 of the
200 students responded ”yes."
A. Find 98% confidence interval
B. How would the confidence interval change if the
confidence level had been 90% instead of 98%?
C. How would the confidence interval change if the
sample size had been 300 instead of 200? (Assume the same sample
proportion.)
D. How large would the sample size have to be to
make the margin of error one fourth as big in the 98% confidence
interval?
28 Feb 2023
Unlock all answers
Get 1 free homework help answer.
Already have an account? Log in
