(Answered) Defining a hypothesis mathematically its a mall survey

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Defining a Hypothesis mathematically its a mall survey scenario. is the time spent by customers in the mall the same for the different times of the day.

If u1 = daytime/weekday u2 =eveining/weekday u3 = daytime weekend u4 = evening weekend.

would it be

Ho=u1=u2=u3=u4 is there a better way. What about he alternative hypothesis

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