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Author Question: During a cold winter, the temperature stayed below zero for 10 days (ranging from 20 to 5). The ... (Read 182 times)

stevenposner

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on: Jun 24, 2018
During a cold winter, the temperature stayed below zero for 10 days (ranging from 20 to 5). The variance of the temperatures of the 10 day period _____.
 a. is negative since all the numbers are negative
  b. must be at least zero
  c. cannot be computed since all the numbers are negative
  d. can be either negative or positive

Question 2

When constructing a confidence interval for the population mean using the standard deviation of the sample, the degrees of freedom for the t distribution equals
 a. n - 1.
   b. n.
   c. 2n.
   d. n + 1.


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Anonymous

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

b

Answer to Question 2

a


stevenposner

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Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

triiciiaa

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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