Answered: A sample of 26 offshore oil workers…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

A sample of 26 offshore oil workers took part in a simulated escape exercise, resulting in the accompanying data on time (sec) to complete the escape.

389	356	359	363	375	425	326	395	402
373	373	370	365	367	364	325	339	393
392	369	375	359	357	404	335	398

A normal probability plot of the n = 26 observations on escape time given above shows a substantial linear pattern; the sample mean and sample standard deviation are 371.08 and 24.41, respectively. (Round your answers to two decimal places.)

(a)

Calculate an upper confidence bound for population mean escape time using a confidence level of 95%.

(b)

Calculate an upper prediction bound for the escape time of a single additional worker using a prediction level of 95%.

Suppose that two additional workers will be chosen to participate in the simulated escape exercise. Denote their escape times by X₂₇ and X₂₈, and let X_newdenote the average of these two values. Modify the formula for a PI for a single x value to obtain a PI for X_new, and calculate a 95% two-sided interval based on the given escape data.

Expert Solution