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Coupon Accepted Successfully!

 

Test statistic

 

  • The value of the test statistic is simply the z-value corresponding to = $20,000


 


 

 

 

  • In this case, since the observed sample statistic (20,000) is greater than the critical value (19,658), so the null hypothesis is rejected =>
  • There is a significant difference in the hypothesized population parameter and the observed sample statistic =>
  • Mean income > 19,000 =>
  • Launch the course

 





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