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Author Question: The weight of a .5 cubic yard bag of landscape mulch in uniformly distributed over the interval from ... (Read 90 times)

lilldybug07

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on: Jun 24, 2018
The weight of a .5 cubic yard bag of landscape mulch in uniformly distributed over the interval from 38.5 to 41.5 pounds.
 a. Give a mathematical expression for the probability density function.
  b. What is the probability that a bag will weigh more than 40 pounds?
  c. What is the probability that a bag will weigh less than 39 pounds?
  d. What is the probability that a bag will weigh between 39 and 40 pounds?

Question 2

In a multiple regression analysis involving 12 independent variables and 166 observations, SSR = 878 and SSE = 122 . The coefficient of determination is
 a. 0.1389
  b. 0.1220
  c. 0.878
  d. 0.7317


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SamMuagrove

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Reply #1 on: Jun 24, 2018
Answer to Question 1

a. f(x) = 1/3 for 38.5  x  41.5
= 0 otherwise
b. .5000
c. .1667
d. .3333

Answer to Question 2

C


lilldybug07

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Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

samiel-sayed

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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