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anonymous

  • one year ago

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?

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  1. anonymous
    • one year ago
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    between -33.2 and + 33.2 between -49.9 and +49.9 between -102.8 and +102.8 between -154.2 and +154.2

  2. anonymous
    • one year ago
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    @Black_ninja123

  3. Black_ninja123
    • one year ago
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    Give me one sec

  4. Black_ninja123
    • one year ago
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    I don't get this let me tag someone

  5. Black_ninja123
    • one year ago
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    @Thesmarterone Do you get this?

  6. anonymous
    • one year ago
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    @Thesmarterone please help

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