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Author Question: When calculating a confidence interval, the reason for using the t-distribution rather than the ... (Read 43 times)

cartlidgeashley

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on: Jun 24, 2018
When calculating a confidence interval, the reason for using the t-distribution rather than the normal distribution for the critical value is that the population standard deviation is unknown.
 
  Indicate whether the statement is true or false

Question 2

Assuming that the change in daily closing prices for stocks on the New York Stock Exchange is a random variable that is normally distributed with a mean of .35 and a standard deviation of .33.
 
  Based on this information, what is the probability that a randomly selected stock will close up .75 or more?A) 0.3869
  B) 0.1131
  C) 0.7100
  D) 0.8869


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jesse.fleming

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

TRUE

Answer to Question 2

B


cartlidgeashley

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

ultraflyy23

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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