A Researcher Claims That the Amounts of Acetaminophen in a Certain

Multiple Choice

A researcher claims that the amounts of acetaminophen in a certain brand of cold tablets have a standard deviation different from the $\sigma = 3.3$ mg claimed by the manufacturer.

A) $\mathrm { H } _ { 0 } : \sigma \neq 3.3 \mathrm { mg }$
$\mathrm { H } _ { 1 } : \sigma = 3.3 \mathrm { mg }$

B) $\mathrm { H } _ { 0 } : \sigma \leq 3.3 \mathrm { mg }$
$\mathrm { H } _ { 1 } : \sigma > 3.3 \mathrm { mg }$

C) $\mathrm { H } _ { 0 } : \sigma \geq 3.3 \mathrm { mg }$
$\mathrm { H } _ { 1 } : \sigma < 3.3 \mathrm { mg }$

D) $\mathrm { H } _ { 0 } : \sigma = 3.3 \mathrm { mg }$
$\mathrm { H } _ { 1 } : \sigma \neq 3.3 \mathrm { mg }$