Hint 1
The null and alternative hypotheses in this case are:
H
o
: μ = 550, and H
a
: μ < 550
H
o
: μ = 500, and H
a
: μ < 500
H
o
: μ = 550, and H
a
: μ > 550
H
o
: μ = 500, and H
a
: μ > 500
H
o
: μ = 550, and H
a
: μ ≠ 550
H
o
: μ = 500, and H
a
: μ ≠ 500
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