pls help, i don't understand what i did wrong
pls help, i don't understand what i did wrong Suppose the value of Young's modulus (GPa)...
Suppose the value of Young's modulus (GPa) was determined for cast plates consisting of certain intermetallic substrates, resulting in the following sample observations: 116.4 115.7 114.7 115.1 115.5 (a) Calculate x. GPa Calculate the deviations from the mean. (Enter your answers to two decimal places.) x 116.4 115.7 114.7 115.1 115.5 deviation (b) Use the deviations calculated in part (a) to obtain the sample variance and the sample standard deviation. (Round your answers to three decimal places.) s2 = GPa2...
Will rate!! Suppose the value of Young's modulus (GPa) was determined for cast plates consisting of certain intermetallic substrates, resulting in the following sample observations: 116.7 115.8 1149 115.3 115.9 (a) Calculate x. CEnter your answer to two decimal places.) Calculate the deviations from the mean. (Enter your answers to two dedimal places.) deviation (b) Use the deviations calculated in part (a) to obtain the sample variance and the sample standard deviation. (Round your answers to three decimal places) 116.7...
Will rate!! Suppose the value of Young's modulas (GPa) was determined for cast plates consisting of certain intermetallic substrates, resulting in the folowing sample observations 116.7 115.8 1149 115.3 115.9 Calculate . (Enter your answer to twe decimal places) GPa Calculate the deviations from the mean. (Enter your answers to two decimal places) deviation tb) Use the deviations caculated in part (a) te obtain the smle variance and the sample standard deviation. (Round your answers to three decimal places.) 116.7...
Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for aluminum alloy sheets of a particular type, its mean value and standard deviation are 70 GPa and 1.6 GPa, respectively (values given in the article "Influence of Material Properties Variability on Springback and Thinning in Sheet Stamping Processes: A Stochastic Analysis (Int. J. of Advanced Manuf. Tech, 2010: 117-134)). (a) If X is the sample mean Young's modulus for a random sample of n 16...
Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, its mean value and standard deviation are 70 GPa and 2.5 GPa, respectively. Suppose the distribution is normal. (Round your answers to four decimal places.) (a) Calculate P(69 < X < 71) when n = 9. (b) How likely is it that the sample mean diameter exceeds 71 when n = 16?
Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, its mean value and standard deviation are 80 GPa and 1.6 GPa, respectively. Suppose the distribution is normal. (Round your answers to four decimal places.) (a) Calculate P(79 s I s 81) when n = 16. (b) How likely is it that the sample mean diameter exceeds 81 when n = 25?
Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for metal sheets of a particular type, its mean value and standard deviation are 80 GPa and 2.4 GPa, respectively. Suppose the distribution is normal. (Round your answers to four decimal places.) (a) Calculate P(79 < X < 81) when n = 9. (b) How likely is it that the sample mean diameter exceeds 81 when n = 25? You may need to use the appropriate...
My Notes Ask Your Te You are given n 8 measurements: 5, 3, 6, 6, 6, 6, 4, 7, (a) Calculate the range 4 (b) Calculate the sample mean, X. x5.375 (c) Calculate the sample variance, s2, and standard deviation, s. (Round your variance to four decimal places and your standard deviation to two decimal places.) s211.87 s= 3.44 (d) Compare the range and the standard deviation. The range is approximately how many standard deviations? Round your answer to two...
Please help! I will rate:) An article reported the following data on oxidation-induction time (min) for various commeroal oils 85 101 130 160 180 195 133 145 211 105 145 153 152 139 87 99 93 119 129 (a) Calculate the sample variance and standard deviation. (Round your answers to three decimal places.) s2- min2 》 the observations were r expressed in hours, what would be t e resulting va ues o the sample variance and samp e standard deviation?...
Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type. 6.0 7.2 7.3 6.3 8.1 6.8 7.0 7.5 6.8 6.5 7.0 6.3 7.9 9.0 9.0 8.7 7.8 9.7 7.4 7.7 9.7 8.2 7.7 11.6 11.3 11.8 10.7 The data below give accompanying strength observations for cylinders. 6.1 5.8 7.8 7.1 7.2 9.2 6.6 8.3 7.0 8.5 7.5 8.1 7.4 8.5 8.9 9.8 9.7 14.1 12.6 11.9 Prior to obtaining data, denote the beam strengths by...