(a) z = 2.25 P = (b) z = -1.95 P = (c) z = 0.51 P = (d) z = 1.29 P = (e) z = -5.
ID: 2907840 • Letter: #
Question
(a) z = 2.25
P =
(b) z = -1.95
P =
(c) z = 0.51
P =
(d) z = 1.29
P =
(e) z = -5.00
P =
-------------------------------
Five students visiting the student health center for a free dental examination during National Dental Hygiene Month were asked how many months had passed since their last visit to a dentist. Their responses were as follows.
Assuming that these five students can be considered a random sample of all students participating in the free checkup program, construct a 95% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population of students participating in the program. (Give the answer to two decimal places.)
(___________, __________________)
6 17 10 24 27Explanation / Answer
Solution:-
(a) Z = 2.25
P = 0.0244
(b) Z = -1.95
P = 0.0512
(C) Z = 0.51
P = 0.6101
(d) Z = 1.29
P = 0.1971
(e) Z = -5.00
P = 0.0001
---------------------------------
Solution:- Given information that values 6,17,10,24,27
x = 16.8 , s = 8.9275 , df = n-1 = 4
t = 2.776
95% confidence interval for the mean : X +/- t*s/sqrt(n)
: 16.8 +/- 2.776*8.9275 /sqrt(5)
: 5.72 , 27.88
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.