Asked by Megan
A poll was conducted that asked 1015 people how many books they had read in the past year. Results indicated that x-bar= 12.3 books and s=16.6 books. Construct a 95% confidence interval for the mean number of books people read.
____, _____
PLEASE HELP ME!!!!!!!!!!!!
____, _____
PLEASE HELP ME!!!!!!!!!!!!
Answers
Answered by
MathGuru
Formula:
CI95 = mean ± 1.96 (sd/√n)
...where ± 1.96 represents the 95% interval using a z-table, sd = standard deviation, and n = sample size.
n = 1015
mean = 12.3
sd = 16.6
Plug values into the formula and determine the upper bound (+) and lower bound (-).
I'll let you take it from here.
CI95 = mean ± 1.96 (sd/√n)
...where ± 1.96 represents the 95% interval using a z-table, sd = standard deviation, and n = sample size.
n = 1015
mean = 12.3
sd = 16.6
Plug values into the formula and determine the upper bound (+) and lower bound (-).
I'll let you take it from here.
Answered by
Megan
Thanks!!!!!!!!!
Answered by
Megan
Got it thanks!
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.