Mathematics, 24.12.2019 02:31 triciazeeck62311
Each of 174 newly manufactured items is examined and the number of scratches per item is recorded (the items are supposed to be free of scratches), yielding the following data:
number of scratches per item 0 1 2 3 4 5 6 7
observed frequency 24 34 48 33 18 7 9 1
let x = the number of scratches on a randomly chosen item, and assume that x has a poisson distribution with parameter ฮผ.
(a) find an unbiased estimator of ? and compute the estimate for the data. [hint: e(x) = ? for x poisson, so
e(x) = ? ]
(b) what is the standard deviation (standard error) of your estimator? compute the estimated standard error. [hint: ? x2 = ? for x poisson.]
Answers: 2
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What is the measure of ac? 5 units 13 units 26 units 39 units
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Mathematics, 21.06.2019 17:00
Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2
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Mathematics, 22.06.2019 00:30
$5400 is? invested, part of it at 11? % and part of it at 8? %. for a certain? year, the total yield is ? $522.00. how much was invested at each? rate?
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Each of 174 newly manufactured items is examined and the number of scratches per item is recorded (t...
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