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Author Question: Double-subscript notation for decision variables should be avoided unless the number of decision ... (Read 159 times)

formula1

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on: Jun 24, 2018
Double-subscript notation for decision variables should be avoided unless the number of decision variables exceeds nine.
  Indicate whether the statement is true or false

Question 2

A sample of 81 account balances of a credit company showed an average balance of 1,200 . The population standard deviation is 126 . You want to determine if the mean of all account balances is significantly different from 1,150 . Use a .05 level of significance.


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samiel-sayed

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

F

Answer to Question 2

H0:  = 1150
Ha:   1150 z = 3.57; therefore, reject H0 . There is sufficient evidence at  = .05 to conclude that the mean of all account balances is significantly different from 1,150.


formula1

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Reply 2 on: Jun 24, 2018
Gracias!

cdmart10

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Reply 3 on: Yesterday
Wow, this really help

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