The CDC reports that the average length ofstay in a hospital for U.S. citizens is 4.8 days. The following data represent the length of hospital stays for 10 patients released recently from a local hospital: 5, 5, 4, 6, 2, 1, 3, 6, 5, 4. Find the mean of these numbers. Is the mean length of hospital stay for these patients higher or lower than the national average?
A) Mean = 4.1 days ;lower than the national average
B) Mean = 5.1 days ;higher than the national average
C) Mean = 3.6 days ;lower than the national average
D) Mean = 4.6 days ;higher than the national average
E) Mean = 3.1 days ;higher than the national average

Question

Quizplus · Accepted Answer

To find the mean, add all the numbers together and divide by the total number of numbers. (5 + 5 + 4 + 6 + 2 + 1 + 3 + 6 + 5 + 4) / 10 = 41 / 10 = 4.1 days. This is lower than the national average of 4.8 days.

The CDC Reports That the Average Length Ofstay in a Hospital