Engineering Statistics True or False j) The average height of 300,000,000 Americ
ID: 3232284 • Letter: E
Question
Engineering Statistics True or False j) The average height of 300,000,000 Americans can be accurately estimated from 10,000 people. k) The average height of 300,000,000 Americans can be precisely estimated from 10,000 people. There are instances in which precision and accuracy are the same. m) Interactions between two factors (A and B) only occur when the calculated interaction AB 0. n) Monitoring a 600 C baking process requires a K-type thermocouple. o) Positive displacement meters are required for high pressure gases. p) Readings made from an analog gauge can never be more precise than its graduation. q) The conversion factor from feet to inches has 2 significant figures. r) Temperature and pressure are random variables. s) Multiple and simple linear regression models can only be compared only if the total number of data points (n) is the same. The slope and intercept of a regression model can be random variables.Explanation / Answer
i) False: because of when we repeat the experiment several time then the variance is minimized.
j) True because of using regression analysis can predict exactly unknown variable value from the known variable value
k) True: because of using regression analysis can predict correct/accurate unknown variable value from the known variable value.
l) True: because of accurate and precise gives approximately same meaning of estimation as in regession analysis concerned.
r) True: Temperatute and pressure are two random variable to analyse the relationshi
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