Step-by-step explanation:
Since we have given that
Number of muffins Diana sold at the bake sale = 336
Number of muffins Bob sold at the bake sale = 287
Now, here we are using the method of estimation i.e. rounding the integers to nearest ones.
By estimation, we get
Number of muffins Diana sold at the bake sale = 340
Number of muffins Bob sold at the bake sale = 290
So,
Difference between them is given by
Hence, Bob sold 50 fewer muffins than Diana.
Answer:
a) P(identified as containing explosives)=P(actually contains explosives and identified as containing explosives)+P(actually not contains explosives and identified as containing explosives)
=(10/(4*106))*0.95+(1-10/(4*106))*0.005 =0.005002363
hence probability that it actually contains explosives given identified as containing explosives)
=(10/(4*106))*0.95/0.005002363=0.000475
b)
let probability of correctly identifying a bag without explosives be a
hence a =0.99999763 ~ 99.999763%
c)
No as even if that becomes 1 ; proportion of true explosives will always be less than half of total explosives detected,
Answer:
8/35 de litro
Step-by-step explanation:
De la pregunta, sabemos que se necesitan 4/7 de un litro para pintar un metro cuadrado de pared.
Ahora necesitamos saber la cantidad de pintura necesaria para pintar 2/5 de un metro cuadrado.
Digamos que la cantidad necesaria es x
Ahora hagamos una relación matemática;
4/7 pinturas 1 metro cuadrado
x pintará 2/5 metros
cuadrados por lo tanto, x * 1 = 4/7 * 2/5 = 8/35
3/4 = 6/x....3/4 = 6/8...notice that proportions are nothing but equivalent fractions
x = 8
