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Author Question: The variance is equal to the _____. a. absolute value of the standard deviation b. squared value ... (Read 78 times)

RRMR

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on: Jun 24, 2018
The variance is equal to the _____.
 a. absolute value of the standard deviation
  b. squared value of the standard deviation
  c. square root of the standard deviation
  d. inverse value of the standard deviation

Question 2

There are 8,000 students at the University of Tennessee at Chattanooga. The average age of all the students is 24 years with a standard deviation of 9 years. A random sample of 36 students is selected.
 a. Determine the standard error of the mean.
  b. What is the probability that the sample mean will be larger than 19.5?
  c. What is the probability that the sample mean will be between 25.5 and 27 years?


Danny Ewald

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

b

Answer to Question 2

a. 1.5
b. 0.9986
c. 0.1359


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