A cereal manufacturer claims that the mean weight of cereal in its \( 12-\mathrm{o} \) boxes is at least 12.3 oz. Write the null and alternative hypotheses that would be used to test that claim. \( \mathrm{H}_{0}: \mu=12.3 \quad \mathrm{H}_{\mathrm{a}}: \mu \neq 12.3 \) \( \mathrm{H}_{0}: \mu \neq 12.3 \quad \mathrm{H}_{\mathrm{a}}: \mu=12.3 \) \( \mathrm{H}_{0}: \mu \neq 12.3 \quad \mathrm{H}_{\mathrm{a}}: \mu<12.3 \) \( \mathrm{H}_{0}: \mu=12.3 \quad \mathrm{H}_{\mathrm{a}}: \mu \geq 12.3 \) \( \mathrm{H}_{0}: \mu \geq 12.3 \quad \mathrm{H}_{\mathrm{a}}: \mu=12.3 \) \( \mathrm{H}_{0}: \mu=12.3 \quad \mathrm{H}_{\mathrm{a}}: \mu>12.3 \) \( \mathrm{H}_{0}: \mu=12.3 \quad \mathrm{H}_{\mathrm{a}}: \mu<12.3 \) \( \mathrm{H}_{0}: \mu<12.3 \) \( \mathrm{H}_{\mathrm{a}}: \mu=12.3 \)
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