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Author Question: If there is a very weak correlation between two variables, then the coefficient of determination ... (Read 70 times)

imowrer

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on: Jun 24, 2018
If there is a very weak correlation between two variables, then the coefficient of determination must be
 a. much larger than 1, if the correlation is positive.
  b. much smaller than -1, if the correlation is negative.
  c. equal to one.
  d. closer or equal to zero.

Question 2

A manufacturing process produces items whose weights are normally distributed. It is known that 22.57 of all the items produced weigh between 100 grams up to the mean and 49.18 weigh from the mean up to 190 grams. Determine the mean and the standard deviation.


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TDubDCFL

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

d

Answer to Question 2

Standard deviation = 30 Mean = 113


imowrer

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Reply 2 on: Jun 24, 2018
Gracias!

alexanderhamilton

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Reply 3 on: Yesterday
Wow, this really help

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