Part B (Based off week 11 workshop content) An engineering company has ordered steel to be used for a rail construction project. Before using the steel, they want to test it to ensure the material properties from the supplier are correct. A random sample of the ordered steel is tested for its Yield Strength. The results are shown below. Yield Strength (MPa) 197 203 194 196 196 197 198 205
1. Calculate the sample mean and sample variance by hand, then verify your answers with MATLAB’s mean and var functions.
2. The supplier claims that the average Yield Strength of their steel is 200 MP a. Conduct a hypothesis test to determine whether there is enough evidence to reject this claim using a significance level of α = 0.05.
3. Determine a 95% confidence interval for the average Yield Strength. Does the confidence interval support the result of your hypothesis test?
4. Use the ttest function in MATLAB to verify your answers to Q2 and Q3. 5. If we were to double the sample size and obtain the same sample mean and sample variance, what would happen to the 95% confidence interval for Yield Strength? Explain why this happens.
Part B (Based off week 11 workshop content) An engineering company has ordered steel to be used for a rail construction project. Before using the steel, they want to test it to ensure the material pro...
Please use MATLAB. Part B (Based off week 11 workshop content) An engineering company has ordered steel to be used for a rail construction project. Before using the steel, they want to test it to ensure the material properties from the supplier are correct A random sample of the ordered steel is tested for its Yield Strength. The results are shown below. Yield Strength (MPa) 197203194196196197198205 1. Calculate the sample mean and sample variance by hand, then verify your answers...
Part A (Based off week 10 workshop content) Receatly a study was performed on a Qareslad highaay regarding the quan- tity and speed of vehicles that use the road. It is your jo to determine the probabality of certain events with the use of probability distribations For each question, clearly state which probability distribution the random variable follows. You mast solve each peoblem by band and verify using a MATLAB function. 1. During the testing time, it was found that...
the codes should be done in matlab and please answer all questions. Part B (Based off week 11 workshop content) An engineering ccmpony bas cedered steel to be used Soer a rail eustraction project. Before ing the steel they want to test it to eusure the materia properties from the supplier are correct A random sample of the ordered steel is tested for its Yield Strength The results are shown below 1. Caleulate the sample mean and sample vwrice by...