22. A fast food restaurant estimates that the mean sodium content in one of its breakfast sand-wiches is no more that 920 milligrams. A random sample of 32 breakfast sandwiches has a meansodium content of 935 milligrams. Assume the population standard deviation is 18 milligrams. Ata = 0.10, do you have enough evidence to reject the restaurant's claim?a) The sample mean is 935 milligrams. Before doing any work, do you think that is far enoughabove 920 to suggest that the sandwiches have more than 920 milligrams of sodium, ON AVER-AGE?b) Perform the hypothesis test.c) State the conclusion clearly and compare with your guess in part a.

Solution-: Given: μ0=920,σ=18,x¯=935,n=32,α=0.10 We want to find (a) The sample mean is 935…

Answered: 22. A fast food restaurant estimates…

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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The weights for newborn babies is approximately normally distributed with a mean of 6.5 por standard deviation of 1.1 pounds. Consider a group of 800 newborn babies: 1. How many would you expect to weigh between 3 and 6 pounds? 259 2. How many would you expect to weigh less than 5 pounds? 3. How many would you expect to weigh more than 4 pounds? 790 4. How many would you expect to weigh between 6.5 and 7 pounds? 140
A credit score measures a person's creditworthiness. Assume the average credit score for Americans is 693. Assume the scores are normally distributed with a standard deviation of 45. a) Determine the interval of credit scores that are one standard deviation around the mean. b) Determine the interval of credit scores that are two standard deviations around the mean. c) Determine the interval of credit scores that are three standard deviations around the mean. a) The interval of credit scores that are one standard deviation around the mean ranges from (Type integers or decimals. Use ascending order.) b) The interval of credit scores that are two standard deviations around the mean ranges from (Type integers or decimals. Use ascending order.) c) The interval of credit scores that are three standard deviations around the mean ranges from (Type integers or decimals. Use ascending order.) to to to W
Most people think that the "normal" adult body temperature is 98.6°F. In a more recent study, researchers reported that a more accurate figure may be 98.1°F. Furthermore, the standard deviation appeared to be around 0.7°F. Assume that a Normal model is appropriate. b) What fraction of people would be expected to have body temperatures above 98.6°F?
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3. The average height of a male student in the EDA class of Engr. Ventura in PLM has historically been 1.625 meters with a standard deviation of 0.07 meter. Is there a reason to believe that there has been a change in the average height of male EDA students under Engr. Ventura if a random sample of 50 males in the present EDA class has an average height of 1.652 meters? Assume the standard deviation remains the same.
In order to have the standard error of the mean be 6, one would need to take a sample of size from a normally distributed population with a standard deviation of 42
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