Question

View Policies Current Attempt in Progress Please use the accompanying Excel data set or accompanying Text file data set when completing the following exercise. Data on oxide thickness of semiconductors are as follows: 425 433 417 417 420 434 418 408 432 436 422 426 408 434 435 429 412 426 408 435 422 427 413 417 Consider this data as a sample of the population. (a) Calculate a point estimate of the mean oxide thickness for all wafers in the population (Round your answer to 3 decimal places.) (b) Calculate a point estimate of the standard deviation of oxide thickness for all wafers in the population. (Round your answer to 2 decimal places.) (c) Calculate the standard error of the point estimate from part (a). (Round your answer to 2 decimal places.) (d) Calculate a point estimate of the median oxide thickness for all wafers in the population (Express your answer to 1 decimal places.) le Calculate a point estimate of the proportion of wafers in the population that have oxide thickness greater than 430 angstrom. (Round your answer to 4 decimal places.) Angstroms (a) The point estimate of the mean oxide thickness is (b) The point estimate of the standard deviation of oxide thickness is Angstroms. Angstroms (c) The point estimate of the standard error of the mean is (d) The point estimate of the median oxide thickness is i Angstroms (e) The estimate of the proportion requested is Statistical Tables and Charts Attempts: 0 of 1 used Submit Answer Save for Later

Answer 1

Solutions The given data is 425, 432, 433,417 417 420 434 618 408, 436, 422 62.6, 408 434 435 429 426 608 435, 42, 427, 413 417 7 412 1 mean oxide ay The point estimate of thickness is ů = I Ę E ni 10154 24 423.083 61 Point estimate of standard TO find deviation. 22= { x² x² 4297982 24 (423.083 3² 83.0764 The standard deviation is CS canned with CamScanner

ô - 9.11 point estimate of the standard mean enor fo S. Ex = goll 172) SEO 1.86 al To find mediani The data are written order: th ascending 408 418 417 408 420 .432 408 42 433 612 422 434 413 425 417 426 GBS 626 417 427 436 borz 435 n=24 even. th Median = Q = (n+1) obs. ICS

12.5 th obs. पर 12th abs. ti 13th obs. 1216. obs! 13.th. Ź ( (ansat 422 t G. 22 2 = 422t 3 2 423.5 median = Q2 423.5 J. estimate of the The requested proportion i's 7 24 0.2917