Two-sample t-test

You want to test whether there is a difference in the average concentration of NO2 between the weekdays and weekends at the Amsterdam-Vondelpark station at a significance level of #\alpha = 0.01#.

What are your H0 and your HA in this case?

#\neq#

#\geq#

#=#

#\leq#

#<#

#>#

#H_0#: #\mu_{weekday}# #\mu_{weekends}#.
#H_a#: #\mu_{weekday}# #\mu_{weekends}#.

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