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Author Question: SAT scores have an average of 1200 with a standard deviation of 60 . A sample of 36 scores is ... (Read 122 times)

DyllonKazuo

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on: Jun 24, 2018
SAT scores have an average of 1200 with a standard deviation of 60 . A sample of 36 scores is selected.
 a. What is the probability that the sample mean will be larger than 1224?
  b. What is the probability that the sample mean will be less than 1230?
  c. What is the probability that the sample mean will be between 1200 and 1214?
  d. What is the probability that the sample mean will be greater than 1200?
  e. What is the probability that the sample mean will be larger than 73.46?

Question 2

In a standard normal distribution, the range of values of z is from _____.
 a. minus infinity to infinity
  b. 1 to 1
  c. 0 to 1
  d. 3.09 to 3.09


kxciann

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

a. .0082
b. .9986
c. .4192
d. .5
e. 1.0

Answer to Question 2

a


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DyllonKazuo

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Reply #2 on: Jun 24, 2018
Thank you :)


kxciann

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Reply #3 on: Jun 24, 2018
Happy to help you


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