Answer:
We accept H₀ we don´t have enough evidence to conclude that a consumer group position is correct
Step-by-step explanation:
We have a case of test of proportion, as a consumer group is suspicious of the claim and think the proportion is lower we must develop a one tail test (left tail) Then
1.- Test hypothesis:
Null hypothesis  H₀                   P = P₀
Alternative hypothesis  Hₐ       P < P₀
2.- At significance level of α  = 0,05   Critical value
 z(c)  =  -1,64
3.-We compute z(s) value as:
z(s)  =  ( P - P₀ )/ √P*Q/n      where   P = 44/80     P = 0,55   and Q = 0,45
P₀ = 0,6   and  n = 80
Plugging all these values in the equation we get:
z(s)  = ( 0,55 - 0,6 ) / √(0,2475/80)
z(s)  =  - 0,05/ √0,0031
z(s)  =  - 0,05/0,056
z(s)  =  - 0,8928
4.-We compare  z(s)  and  z(c)
z(s) > z(c)      -0,8928 on the left side it means that z(s) is in the acceptance region so we accept H₀