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

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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