Test of Hypothesis for population proportion p

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Test of Hypothesis for population proportion p
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Large sample test of hypothesis for p (Critical
value procedure)
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Large sample test of hypothesis for p (p-value
procedure)
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• Example 5
• A professional basketball player used to make
  only 55 of his free throw shots. Now the
  players agent claims he has improved and wants
  more money. The agent points out that the player
  has make 40 of 60 free throw attempts this
  season.
• Test whether the player has improved at
  significance level 0.05.

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• Example 6
• In a July 2001 research note, the US Department
  of Transportation reported the results of the
  National Occupant Protection Use Survey. One
  focus of the survey was to determine the level of
  cell phone use by drivers while they are in the
  act of driving a motor vehicle. Data collected by
  observers at randomly selected intersections
  across the country revealed that in a sample of
  1165 drivers, 35 were using their cell phone.
• Conduct a test (at a0.01) with the p-value
  procedure to determine if the true driver cell
  phone use rate, differs from 0.02.

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Exercise

• 1. Examining data collected on 835 males from
  the National Youth Survey, researchers at
  University of Florida found that 401 male youths
  were raised in a single-parent family. Does this
  information allow you to conclude that more than
  45 of male youths are raised in a single-parent
  family? Test at a.05