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Author Question: A bin contains 65 light bulbs of which 10 are defective. If 6 light bulbs are randomly selected from ... (Read 120 times)

kodithompson

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on: Aug 2, 2018
A bin contains 65 light bulbs of which 10 are defective. If 6 light bulbs are randomly selected from the bin with replacement, find the probability that all the bulbs selected are good ones.
 
  A) 0 B) 0.846 C) 0.424 D) 0.367

Question 2

A poll of 2000 randomly selected students in grades 6 through 8 was conducted and found that 37 enjoy playing sports. Would confidence in the results increase if the sample size were 3100 instead of 2000? Why or why not?
 
  What will be an ideal response?


ju

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Reply #1 on: Aug 2, 2018
Answer to Question 1

D

Answer to Question 2

Yes. As the sample size increases, the sample statistics tend to vary less and they tend to be closer to the population parameter.


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