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Researchers were interested in whether there was a difference in physical activity (measured by average steps...

  1. Researchers were interested in whether there was a difference in physical activity (measured by average steps per day) between men and women. Activity monitors were handed out to 10 men and women  and their daily steps were recorded for a week and then averaged out so that each individual had a daily average step count.

Daily Steps

Men (steps/day)

Women (steps/day)

X ± SD

6602.05 ± 1889.20

7397.62 ± 2037.05

df = 18

SE = 878.56

  1. What are your null and alternative hypotheses in words and notation format?

  1. What type of t-test are you going to run on the following data?

  1. What is your test statistic and your critical value?

  1. Is your p-value above or below 0.05?

  1. Do you reject the null or refuse to reject the null hypothesis?

  1. What are the 95% confidence intervals of the population mean difference
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