SOLUTION: The numbers of people waiting in the emergency clinic of a small health care facility were randomly counted thirty-five times. Using the data below and the appropriate formula, set
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Question 406695: The numbers of people waiting in the emergency clinic of a small health care facility were randomly counted thirty-five times. Using the data below and the appropriate formula, set up a 95% confidence interval for the mean number of people waiting in emergency.
11 12 13 13 14 14 14
15 17 16 16 17 17 16
15 15 18 19 16 16 18
17 17 18 17 16 16 16
15 9 10 18 14 11 9
(where x and s are calculated from the sample data, n = 35 and z = 1.96)
Remember to show all your work and round your final answer to the nearest whole number.
Hi
entering the data in an Excel Cloumn and used the stat tool found: = 2.623423897 and mean = 15
ME = 1.96*2.6234/sqrt(35) = 5.9161
CI: 15-5.9161 < u < 15+ 5.9161
You can put this solution on YOUR website! Find the mean :
11 12 13 13 14 14 14........91
15 17 16 16 17 17 16..........114
15 15 18 19 16 16 18..........117
17 17 18 17 16 16 16..........117
15 9 10 18 14 11 9..................86
......the mean is
The is
Find the standard deviation of using this formula first:
subtract the mean individually from each of the numbers in the question and square the result.
x 11 12 13 13 14 14 14
(x - x)² 16 9 4 4 1 1 1..........36
x 15 17 16 16 17 17 16
(15 - x)² 0 4 1 4 4 4 1.............18
x 15 15 18 19 16 16 18
(15 - x)² 0 0 9 16 1 1 9.............36
