Answer: "The true mean height of the giraffes is less than or equal to 15 feet".
Step-by-step explanation:
A hypothesis in a statement that is made about a statistical parameter of a population.
A null hypothesis [tex]H_0[/tex] is usually the hypothesis that is tried to reject by an alternate hypothesis [tex]H_a[/tex]
In this case [tex]H_a[/tex] is:
"The true mean height of the giraffes is more than 15 feet".
Therefore, for this case, the null hypothesis must be:
"The true mean height of the giraffes is less than or equal to 15 feet".
