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Author Question: A sampling distribution of means for samples of students taking the SAT exam has a population mean ... (Read 73 times)

mrsjacobs44

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on: Jun 20, 2018
A sampling distribution of means for samples of students taking the SAT exam has a population mean of 500 and a standard error of 200 . What proportion of sample means would fall between the population mean and a sample mean of 800?
 
  a. 0.5000 c. 0.1915
  b. 0.3413 d. 0.4332

Question 2

If a school's z-score for its sample mean was +3, its percentile rank in the state was
 
  a. 99.87. c. 85.87.
  b. 90.87. d. 95.87.


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juwms

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Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

A


mrsjacobs44

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Reply 2 on: Jun 20, 2018
Gracias!

kjohnson

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Reply 3 on: Yesterday
Wow, this really help

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