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Author Question: In a survey of n = 100 teachers, 50 preferred year-around school. Set the .95 confidence interval ... (Read 28 times)

leilurhhh

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on: Jun 20, 2018
In a survey of n = 100 teachers, 50 preferred year-around school. Set the .95 confidence interval around this sample proportion.
 
  a. .40 to .60
  c. .50 to .60
  b. .45 to .55
  d. .55 to .65

Question 2

A university surveyed 36 randomly selected graduate students in a pilot study and found that 27 said they favored the new university health insurance plan and 9 said they opposed it. How many students must the university survey in order to make an estimate of how all graduate students feel about the plan with a margin of error to be no more than 5 percentage points? Use the 95 percent confidence level.
 
  a. 187
  c. 366
  b. 288
  d. 950


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poopface

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

A

Answer to Question 2

B


leilurhhh

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Reply 2 on: Jun 20, 2018
Great answer, keep it coming :)

ryansturges

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Reply 3 on: Yesterday
Gracias!

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