Answer: The professor was not accurate with his hypothesis.
Null hypothesis: P1 = 12.5%, P2 = 42.5%, P3 = 45%
The alternate hypothesis: At least one proportion of the student will differ from the others.
Step-by-step explanation: To check if the professors hypothesis were inaccurate.
What percentage of student bought a hard copy of the book.
(25 ÷ 200) × 100 = 12.5%
What percentage of the student printed it from the web.
(85 ÷ 200) × 100 = 42.5%
What percentage of the students read it online.
(90 ÷ 200) × 100 = 45%
This means that the professor was not accurate with his hypothesis. Because the proportion of student in his hypothesis was not the same in the actual.
Therefore; the null hypothesis are
P1 = 12.5%, P2 = 42.5%, P3 = 45%
The alternative hypothesis will state that at least one of the proportion will be different from the others.
Answer:
34
Step-by-step explanation:
let angle 1 be x
104 = 70 + x (exterior angle property)
x = 104 - 70 = 34 degrees
Answer:
B) 22.0
Step-by-step explanation:
We solve using the Trigonometric function of Tangent
tan θ = Opposite/Adjacent
Adjacent = x
Opposite = 8
θ = 20°
tan θ = 8/x
tan 20° = 0.364
0.364 = 8/x
Cross Multiply
0.364 × x = 8
Divide both sides by 0.364
x = 8/0.364
x = 21.978021978
Approximately, x ≈ 22.0
Option B is the correct option
40 millilitres in total. 32 millilitres of alcohol and 8 of water