Choose the correct null and alternative hypotheses. H0:H0: There is an association between Star Trek fatalities and uniform color. HaHa There is no association between Star Trek fatalities and uniform color. H0:H0: There is no association between Star Trek fatalities and uniform color. HaHa There is an association between Star Trek fatalities and uniform color. Compute the test statistic. Complete the following table of expected counts. (Round your answers to 4 decimal places).    Alive   Dead   Blue       Gold       Red      Compute the value of the test statistic. (Round your answer to 4 decimal places.) χ2=χ2= Compute the p-value. (Round your answer to 4 decimal places.) pp-value =  Interpret the results of the significance test. The p-value provides strong evidence against the null hypothesis. The association between Star Trek fatalities and uniform color is statistically significant. The p-value provides little evidence against the null hypothesis. The association between Star Trek fatalities and uniform color is not statistically significant.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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The color of the Star Trek uniform represents each crew-member's work area. In the original Star Trek series, blue shirts are worn by medical and science staff, gold shirts are worn by the command division, and the red shirts were worn by engineering, security and communications division. We will statistically assess whether there is a connection between uniform color and the fatality rate. The table below shows a sample of how many crew-members in each area have died onscreen and their shirt color. Use αα = 0.05 to test to see if a crew-member's fatality onscreen is dependent on their uniform color.

   Alive   Dead   Total 
 Blue  42 11 53
 Gold  19 6 25
 Red   29 25 54
 Total  90 42 132
  1. Choose the correct null and alternative hypotheses.
    • H0:H0: There is an association between Star Trek fatalities and uniform color.
      HaHa There is no association between Star Trek fatalities and uniform color.
    • H0:H0: There is no association between Star Trek fatalities and uniform color.
      HaHa There is an association between Star Trek fatalities and uniform color.


  2. Compute the test statistic.

    Complete the following table of expected counts. (Round your answers to 4 decimal places).

       Alive   Dead 
     Blue     
     Gold     
     Red     

    Compute the value of the test statistic. (Round your answer to 4 decimal places.)

    χ2=χ2=

  3. Compute the p-value. (Round your answer to 4 decimal places.)

    pp-value = 

  4. Interpret the results of the significance test.
    • The p-value provides strong evidence against the null hypothesis. The association between Star Trek fatalities and uniform color is statistically significant.
    • The p-value provides little evidence against the null hypothesis. The association between Star Trek fatalities and uniform color is not statistically significant.
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