Answer:
wut is this a question about
Step-by-step explanation:
Answer:
Step-by-step explanation:
To Test :-
H0 :- P = 0.12
H1 :- P ≠ 0.12
P = X / n = 156/800 = 0.195
Test Statistic :-
Z = ( P - P0 ) / ( √((P0 * q0)/n)
Z = ( 0.195 - 0.12 ) / ( √(( 0.12 * 0.88) /800))
Z = 6.5279
Test Criteria :-
Reject null hypothesis if Z > Z(α/2)
Z(α/2) = Z(0.05/2) = 1.96
Z > Z(α/2) = 6.5279 > 1.96, hence we reject the null hypothesis
Conclusion :- We Reject H0
There is sufficient evidence to support the claim that there is a difference.
Answer:
3.47
Step-by-step explanation:
since the third decimal is less than 5 then it doesn't carry over to the 7 thus it remains 7.
Answer:
5 and 4
Step-by-step explanation:
2(x-3)^2➡ 2×(x^2-6x+9) ➡ 2x^2-12x+18 = 6x-22
transfer and add like terms
2x^2-12x-6x=-22-18
2x^2-18x = -40
2x^2 - 18x + 40 = 0
(2x-8)(x-5)
x = 5 or, x = 8/2 ➡ 4
