Textura de la tela

Rayón

Poliéster

Algodón

Duración de la

tela

9 meses

3 años

1% años

Precio de #1

tienda

$5.99yd.

$9.95yd.

$12.95yd.

Precio de #2

tienda

$6.95yd.

$8.95yd

$10.95yd

Precio de #3

tienda

$6.49yd.

$8.50yd.

$11.95yd

La Sra. González tiene dos hijas, Karla y Keila. Karla cursará el 6to grado y Keila el

410 grado. Cada joven desea tres faldas. Karla necesita 1% yardas para cada falda y

Keila necesita 2 7 yardas para cada falda. Nota: Esta familia es de escasos recursos

económicos,

Lee y contesta de acuerdo a los datos suministrados:

1. ¿Cuántas yardas necesita comprar la Sra. González para hacer el uniforme

de sus hijas?

2. ¿Qué tipo de tela le conviene comprar para Karla y para Keila? Tome en

consideración que la familia es de escasos recursos.

3. ¿Qué tipo d

Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.