Answer:
Step-by-step explanation:
Given that in a randomized controlled trial in Kenya, insecticide treated bednets were tested as a way to reduce malaria. Among 343 infants using bednets, 15 developed malaria. Among 294 infants not using bednets, 27 developed malaria.
H0: p1=p2
H1: p1 <p2
(one tailed test)
p1 = 15/343:p2 =27/294:
Difference 4.813 %
95% CI 0.9160% to 9.0217%
Chi-squared 5.947
DF 1
Significance level P = 0.0073
Since p <0.01 we reject null hypothesis.
Answer:
La respuesta esta abajo
Step-by-step explanation:
La pregunta no está completa porque no contiene gráficos, pero te mostraré cómo responderla.
La ecuación de un gráfico de línea recta viene dada por:
y = mx + b; donde y y x son variables, m es la pendiente de la gráfica y b es la intersección en y (que es el valor de y cuando x es 0)
Dado que la ecuación de la gráfica es y = mx, comparando con la ecuación de una línea recta (y = mx + b), podemos concluir que la gráfica con una ecuación y = mx, tiene una pendiente de my una intersección con y de 0.
Esto significa que la gráfica pasa por el origen sin tocar el eje y. Además, la gráfica tiene una pendiente positiva.
let's say that sin(θ) = x, then the cos(θ) which is twice the sine has to be 2x, therefore then
A. You would be able to prove it by SSS. One side is already said to be congruent and the other is shared by both.
Answer:
The least number of questions a student can answer correctly is 32
Step-by-step explanation:
Let
x -----> the number of questions answered correctly
y ----> the total number of questions on a test
we know that
For a student to earn and A or B on a test, the ratio must be greater than or equal to 0.8
so
For y=40 questions
Find the value of x
substitute
solve for x
Multiply both sides by 40
so
The least number of questions a student can answer correctly is 32
<u><em>Verify the ratio</em></u>
For x=32, y=40
Compare
----> is ok
