Answer:
3
x
+
3
=
24
x
2
−
10
x
≤
−
9
−
2.5
x
+
5
=
3
Step-by-step explanation:
Answer:
We accept H₀ . We don´t have enough evidence to express the publisher claim is not true
Step by Step explanation:
We must evaluate if the mean of the price of college textbooks is different from the value claimed by the publisher
n < 30 then we must use t - distrbution
degree of freedom n - 1 df = 22 - 1 df = 21
As the question mentions " different " that means, a two-tail test
At 0,01 significance level α = 0,01 α/2 = 0,005
and t(c) = 2,831
Test Hypothesis
Null Hypothesis H₀ μ = μ₀
Alternative hypothesis Hₐ μ ≠ μ₀
To calculate t(s)
t(s) = ( μ - μ₀ ) /σ/√n
t(s) = ( 433,50 - 385 ) / 86,92 / √22
t(s) = 2,6171
Comparing t(c) and t(s)
t(s) < t(c)
Then t(s) is in the acceptance region we accept H₀. We don´t have enough evidence to claim that mean price differs from publisher claim
Answer:
That would be B Collinear
A)Total hours she worked =8+7.5+6.5+3+9= 34 hours
b)Amount she was paid= 34 hours x $20.25= 688.50
She was paid $688.50
Hello
Do many question of divide and do solved examples of division. After solving a lot of questions you will have self confidence and then you can solve questions.
start from low level questions and then do high level questions of division .
Hope It Helps You. ^_^