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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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A task requires the completion of four activities. A teacher would like to know if differences in the sequence of the four activities results in different task completion times. The teacher selects three students and demonstrates the activities in random order to the students. Then each student completes the task with each of the activity sequences. The completion times are recorded. The following table shows the minutes for each student to complete each task. Assume that the populations from which the sample drawn are normally distributed. (use 2 digits after decimal point) Ayşe Sema Ahmet A 21 20.1 21.4 B 17.6 18.7 21.4 C 20 20.1 22.1 D 21.3 18.8 20.5 1. Complete the following analysis of variance table. Source of Variation SS Df MS F-Ratio Between Groups (Students) G Answer Answer Answer Answer Between Blocks (Activities) B 4.83 Answer Answer Answer Error 6.74 Answer Answer…
How many possible random samples of size n = 3 can be drawn from a population of size 10?
Use flat random numbers to estimate .
Explain the difference between a stratified sample and a cluster sample. (Select all that apply.) In a stratified sample, random samples from each strata are included In a stratified sample, every sample of size n has an equal chance of being included. In a stratified sample, the clusters to be included are selected at random and then all members of each selected cluster are included In a cluster sample, every sample of size n has an equal chance of being included. In a stratified sample, the only samples possible are those including every kth item from the random starting position In a cluster sample, the only samples possible are those including every kth item from the random starting position In a cluster sample, the clusters to be included are selected at random and then all members of each selected cluster are included. In a cluster sample, random les from each strata are included.
A company's quality engineer wants to check whether the average weight of the products coming out of the packaging line does not exceed 10 grams. For this, he measured the weights of the products coming out of the line by making random selection. Measurement values respectively; 8, 11,9,11,9,7,11,10,10,9. After a while ; A press machine with a newer technology has been replaced by a press machine where product losses are frequently experienced in the packaging line. and products with the same features were weighed after being processed in this new pressing machine. After the new pressing machine, the weights of the products were measured as follows; 8,8,13,17,8,12,16,14,13,15. a) Test whether the average weight of the products currently exceeds 10 grams or not, at a = 0.05 significance level, by writing the relevant hypotheses and applying all necessary steps to make a decision. Write down the decision you made as a result of the hypothesis test and interpret your decision. b)The…
1
The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports. The maximum possible rating is 10. Suppose a simple random sample of 50 business travelers is selected and each traveler is asked to provide a rating for the Miami International Airport. The ratings obtained from the sample of 50 business travelers follow. 9 2 5 4 6 6 2 7 6 10 8 8 9 7 9 9 9 9 10 9 10 10 10 9 9 10 6 8 10 5 7 10 9 5 9 6 9 860 4 3 6 2 7 10 7 9 9 9 Develop a 95% confidence interval estimate of the population mean rating for Miami. Round your answers to two decimal places. 9
How many simple random samples of 12 elements can be taken from a population containing 67 elements?
The table below shows a random sample of musicians and how they learned to play their instruments. Gender Self-taught Studied in School Private Instruction Total Female 1313 3131 1515 5959 Male 1717 2323 1515 5555 Total 3030 5454 3030 114114 (a) Find P(musician is a female)Pmusician is a female. Enter the exact answer.P(musician is a female)=Pmusician is a female= (b) Find P(musician is a male AND had private instruction)Pmusician is a male AND had private instruction.Enter the exact answer.P(musician is a male AND had private instruction)=Pmusician is a male AND had private instruction= (c) Find P(musician is a female OR is self taught)Pmusician is a female OR is self taught.Enter the exact answer.P(musician is a female OR is self taught)=Pmusician is a female OR is self taught= (d)Are the events "being a female musician" and "studying music in school" mutually exclusive events? Yes, they are mutually exclusive events. No, they are…
The symbole - over x represents the populationof all possible sample means of size n. True or false

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What is the maximum size of a random sample drawn from a population of 900