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Author Question: In order to select a stratified random sample of 500 individuals from a population of 25000 ... (Read 171 times)

moongchi

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on: Jun 19, 2018
In order to select a stratified random sample of 500 individuals from a population of 25000 individuals in which 15 are seniors, 19 are juniors, 20 are sophomores, and 46 are freshmen, _____ juniors should be included in the sample.
 
  a. 95 c. 190
  b. 75 d. 7.50

Question 2

In order to estimate the attention level of college undergraduates in the United States, a psychologist measures the attention span of the undergraduates at a local university. The mean of these scores is a _________.
 
  a. parameter c. statistic
  b. population d. sample


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dmurph1496

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Reply #1 on: Jun 19, 2018
Answer to Question 1

A
19 of 500 is 95 individuals.

Answer to Question 2

C


moongchi

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Reply 2 on: Jun 19, 2018
Wow, this really help

bbburns21

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

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