anonymous
  • anonymous
A teacher wants to compare the mean geology scores of two different classes. She is testing the null hypothesis that there is no difference in the population mean scores of the two classes. The difference of the sample means is 51.4. If the standard deviation of the distribution of the difference of sample means is 16.66, what is the 95% confidence interval for the population mean difference?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
between -33.2 and + 33.2 between -49.9 and +49.9 between -102.8 and +102.8 between -154.2 and +154.2
anonymous
  • anonymous
Black_ninja123
  • Black_ninja123
Give me one sec

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Black_ninja123
  • Black_ninja123
I don't get this let me tag someone
Black_ninja123
  • Black_ninja123
@Thesmarterone Do you get this?
anonymous
  • anonymous
@Thesmarterone please help

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