Kevlar epoxy is a material used in the NASA por shuttles, Strands of this epoxy were usted at the breaking strength. The
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Kevlar epoxy is a material used in the NASA por shuttles, Strands of this epoxy were usted at the breaking strength. The
(a) Find the range (b) Use a calculator to calculate Ix and Ex? Ex= (c) Use the results of part (b) to compute the sample mean, varlance, and standard deviation for the time to failure (Round your answers to four decimal places.) 2- (d) Use the results of part (c) to compute the coefficient of variation (Hound your answer to the nearest whole number) What does this number say about time to failure The standard deviation of the time to tailore is just stly smaller than the average time The content of variation says nothing about time to failure The standard deviation of the time to failure is just lightly larger than the average time The standard deviation is equal to the average Why does a match indicate more consistent data, whereas arger indicates les content data lain Amal CV indicates to consistant dat because the value or in the normalan Amal cu indicates more contents because the value of in the morgen
Kevlar epoxy is a material used on the NASA space shuttles Strands of this epoxy were tested at the 90 breaking strength. The following data represent time to failure in hours) for random sample of 50 epoxy strands. Let be a random variable representing time to failure (in hours) 906 breaking strength. 0.54 1.0 1.5 2.05 100 11.01.2011 3.34 1.54 0.00 0.12 0.00 0.12 0.9 1.05 1:43 3.0 1. 2.10.0% 0.56 0.03 0.09 0.18 0.34 151 LAS 1.50.19 1.55 0.02 0.0% 0.65 000 1 145 1.60 180 4.600 739 1.5 1.64 0.03 0.22 0.72 2. USE SALT (a) Find the range (b) us a calculator to calculate and (c) in the results of part() to compute them for your answer to four decimal places) (4) Use the results of parte compute the code of the whole What does this numbers about time to failure The standart deviation of the time to tales just clity manage time
(a) Find the range. (b) Use a calculator to calculate Ex and ? Ex= Ex? (c) Use the results of part (b) to compute the sample mean variance, and standard deviation for the time to failure. (Round your answers to four S (d) Use the results of part (c) to compute the coefficient of variation (Round your answer to the nearest whole numbet.) What does this number sily about time to failure The standard deviation of the time to fallure is just slightly smaller than the average time. The coefficient of variations nothing about time to fallure The standard deviation of the time to fallur la just cughtly larger than the average time, The standard deviation is equal to the average Why does a small vindicate more content wie vindicates to consistent data? Explain O A Small CV indicates more content data because the value of the meritorio mallon A small av indleate more consistent data became the value of the numeritor larger