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Author Question: A random sample of 144 observations has a mean of 20, a median of 21, and a mode of 22 . The ... (Read 43 times)

jjjetplane

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on: Jun 24, 2018
A random sample of 144 observations has a mean of 20, a median of 21, and a mode of 22 . The population standard deviation is known to equal 4.8 . The 95.44 confidence interval for the population mean is _____.
 a. 15.2 to 24.8
  b. 19.2 to 20.8
  c. 19.216 to 20.784
  d. 21.2 to 22.8

Question 2

The weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds. What is the random variable in this experiment?
 a. Weight of football players
  b. 200 pounds
  c. 25 pounds
  d. Normal distribution


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emily12345

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

b

Answer to Question 2

a


jjjetplane

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Reply 2 on: Jun 24, 2018
Gracias!

yeungji

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Reply 3 on: Yesterday
Excellent

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