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Author Question: A sample size of 25 provides a sample variance of 400. The standard error, in this case equal to 4, ... (Read 120 times)

Sportsfan2111

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on: Jun 24, 2018
A sample size of 25 provides a sample variance of 400. The standard error, in this case equal to 4, is best described as the estimate of the standard deviation of means calculated from sample sizes of 25.
 
  Indicate whether the statement is true or false

Question 2

The true length of boards cut at a mill with a listed length of 10 feet is normally distributed with a mean of 123 inches and a standard deviation of 1 inch. What proportion of the boards will be between 121 and 124 inches?
 
  What will be an ideal response?


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ErinKing

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

TRUE

Answer to Question 2

0.8186 using Excel or 0.8185


Sportsfan2111

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Reply 2 on: Jun 24, 2018
Gracias!

olderstudent

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

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