A major car manufacturer wants to test a new engine to make sure it produces less pollution than average. He takes a sample of 9 of his new engines, and finds on average the pollution output is 16.4 ppm with a sample standard deviation of 2.95ppm. He also knows the average pollution output of current engines is 20 ppm. If we assume this is normally distributed test the claim using a = .01 (а) Но : и (b) Find the critical value(s) (c) Find the test value (d) Accept or reject Ho

A major car manufacturer wants to test a new engine to make sure it produces less pollution than average. He takes a sample of 9 of his new engines, and finds on average the pollution output is 16.4 ppm with a sample standard deviation of 2.95ppm. He also knows the average pollution output of current engines is 20 ppm. If we assume this is normally distributed test the claim using a = .01 (а) Но : и (b) Find the critical value(s) (c) Find the test value (d) Accept or reject Ho

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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An environmentalist estimates that the mean amount of waste recycled by adults in the United States is more than 0.75 pound per person per day. You want to test the claim. You find that the mean wasted recycled per person per day for a random sample of 16 adults in the United States is 0.8 pounds and the standard deviation is 0.21 pound. At a = 0.05, can you support the claim? X-u t* = z = 0/Vn + 0.75 + 0.75 Test statistic: Decision: Write your statement of your findings below:
Kyle's doctor told him that the z-score for his systolic blood pressure is 1.75. Which of the following is the best interpretation of this standardized score? The systolic blood pressure (given in millimeters) of males has an approximately normal distribution with mean u = 121 and standard deviation o = 13. If X = a systolic blood pressure score then X~ N(121, 13). (a) Which answer(s) is/are correct? (Select all that apply.) V Kyle's systolic blood pressure is 1.75 above the average systolic blood pressure of men his age. V Kyle's systolic blood pressure is 1.75 times the average blood pressure of men his age. O Kyle's systolic blood pressure is 175. O Kyle's systolic blood pressure is 1.75 standard deviations above the average systolic blood pressure for men. (b) Calculate Kyle's blood pressure. (Enter an exact number as an integer, fraction, or decimal.)
Suppose that the design engineering team set the specifications for length of a stamped sheet-metal part at 10 inches (T) with acceptable tolerances of ±.05 inches (USL and LSL). The average length of the products produced by the actual stamping process is 9.99 inches (m) with a standard deviation of .015 inches (s). What is the Cpk of the process? As a reminder, here are the process capability equations: |USL – LSL| Cp 60 Cpk = C, (1 – k) |T – µ| k = JUSL-LSL|
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arn.squ.edu.om/mod/quiz/attempt.php?attempt=1766808&cmid=8751228&page=D21 SYSTEM (ACADEMIC) s Statistics 1 || Spring21 Time left 0: Suppose a company produces lightbulbs with a mean lifetime of 1000 hours and a standard deviation of 50 hours. So, the z-score for a particular lightbulb that lasts for only 700 hours is a. 300 b. 6
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