A formal hypothesis test is to be conducted using the claim that the mean AC thermostat setting in restaurants is equal to $74 ^ { \circ } \mathrm { F }$ What is the null hypothesis and how is it denoted?
A) $H _ { 0 } : \mu = 74 ^ { \circ } \mathrm { F }$
B) $H _ { 0 } : \mu \neq 74 ^ { \circ } \mathrm { F }$
C) $H _ { 0 } : p = 74 ^ { \circ } \mathrm { F }$
D) $H _ { 0 } : p

Question

A formal hypothesis test is to be conducted using the claim that the mean AC thermostat setting in restaurants is equal to $74 ^ { \circ } \mathrm { F }$ What is the null hypothesis and how is it denoted?
A) $H _ { 0 } : \mu = 74 ^ { \circ } \mathrm { F }$
B) $H _ { 0 } : \mu \neq 74 ^ { \circ } \mathrm { F }$
C) $H _ { 0 } : p = 74 ^ { \circ } \mathrm { F }$
D) $H _ { 0 } : p < 74 ^ { \circ } \mathrm { F }$

Quizplus · Accepted Answer

The null hypothesis is a statement of no effect or no difference and is typically the hypothesis that researchers aim to test against. In this case, it states that the mean AC thermostat setting in restaurants is equal to 74°F, which is correctly denoted as $H _ { 0 } : \mu = 74 ^ { \circ } \mathrm { F }$.

A Formal Hypothesis Test Is to Be Conducted Using the Claim