A news article reported that college students who have part-time jobs work an average of 15 hours per week. The staff of a college newspaper thought that the average might be different from 15 hours per week for their college. Data were collected on the number of hours worked per week for a random sample of students at the college who have part-time jobs. The data were used to test the hypotheses Ho : µ = 15 H, : µ # 15, where u is the mean number of hours worked per week for all students at the college with part-time jobs. The results of the test are shown in the table below. Sample Mean Std Error df t-stat p-value 13.755 0.707 25 -1.761 0.090 Assuming all conditions for inference were met, which of the following represents a 95 percent confidence interval for u ? (A) 13.755 ± 0.244 (B) 13.755 ±0.286 (C) 13.755 ± 0.707 (D) 13.755 ± 1.245 (E) 13.755 +1.456
A news article reported that college students who have part-time jobs work an average of 15 hours per week. The staff of a college newspaper thought that the average might be different from 15 hours per week for their college. Data were collected on the number of hours worked per week for a random sample of students at the college who have part-time jobs. The data were used to test the hypotheses Ho : µ = 15 H, : µ # 15, where u is the mean number of hours worked per week for all students at the college with part-time jobs. The results of the test are shown in the table below. Sample Mean Std Error df t-stat p-value 13.755 0.707 25 -1.761 0.090 Assuming all conditions for inference were met, which of the following represents a 95 percent confidence interval for u ? (A) 13.755 ± 0.244 (B) 13.755 ±0.286 (C) 13.755 ± 0.707 (D) 13.755 ± 1.245 (E) 13.755 +1.456
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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
Transcribed Image Text:A news article reported that college students who have part-time jobs work an average of 15 hours per week. The
staff of a college newspaper thought that the average might be different from 15 hours per week for their college.
Data were collected on the number of hours worked per week for a random sample of students at the college who
have part-time jobs. The data were used to test the hypotheses
Ho : µ = 15
H, : µ # 15,
where u is the mean number of hours worked per week for all students at the college with part-time jobs. The
results of the test are shown in the table below.
Sample Mean
Std Error
df
t-stat
p-value
13.755
0.707
25
-1.761
0.090
Assuming all conditions for inference were met, which of the following represents a 95 percent confidence
interval for u ?
(A) 13.755 ± 0.244
(B) 13.755 ±0.286
(C) 13.755 ± 0.707
(D) 13.755 ± 1.245
(E) 13.755 +1.456
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