1) The formula used for determining the confidence interval is
Sample mean +/- Critical value (or z-score corresponding to 90% confidence) * Standard
error of mean
8439 +/- 1.645 * 100/sqrt 25
8439 +/- 1.645 * 20
8439 +/- 32.9
2) The only difference in this case is finding the critical value i.e., z-score corresponding to 92% confidence which is 1.75 approximately
Then the confidence interval is
8439 +/- 1.75 * 100/sqrt 25
8439 +/- 1.75 * 20
8439 +/- 35
Lower limit is 8439 - 35 = 8404
The upper limit is 8439 + 35 = 8474
The square root of 2 is an irrational number (1.4)
Answer:
he has to pick the phone up 100 more times
Answer:
5 times 8
4 times 10
and im pretty sure that it
Step-by-step explanation:
I'm guessing A because 28-8=20 and 20/4=5 round tables needed
