Help please!!!! please!!!!
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
Given that:
There are 3 sizes of dishwasher soaps.
Twenty percent of all purchasers select a 25-oz box, 50% select a 40-oz box, and the remaining 30% choose a 65-oz box. Let X1 and X2 denote the package sizes selected by two independently selected purchasers.
Therefore, random samples of size 2 are taken from the population.
The information is well represented in the table below.
25 25 0.20×0.20=0.04 25 0
25 40 0.20×0.50=0.10 32.5 112.5
25 65 0.20×0.30= 0.06 45 800
40 25 0.50×0.20=0.10 32.5 112.5
40 40 0.50×0.50=0.25 40 0
40 65 0.50×0.30=0.15 52.5 312.5
65 25 0.30×0.20=0.06 45 800
65 40 0.30×0.50=0.15 52.5 312.5
65 65 0.30×0.30=0.09 65 0
The sample distribution of is shown below as ;
25 32.5 40 45 52.5 65
0.04 0.10+0.10 0.25 0.06+0.06 0.15+0.15 0.09
= 0.20 =0.12 =0.30
The value of
= 25(0.04) + 32.5(0.20) + 40(0.25) + 45(0.12) + 52.5(0.30) + 65(0.09)
= 44.5 oz
From the same table above ;
the sampling distribution of is be shown below;
0 112.5 312.5 800
0.04+0.25 0.10+0.10 0.15+0.15 0.06+0.06
+0.09
= 0.38 =0.20 = 0.30 0.12
The value of
= (0×0.38)+(112.5×0.20)+(312.5×0.30)+(800×0.12)
=0+112+93.75+96
=301.75
Answer:
Step-by-step explanation:
h is the height of the pebble after a certain amount of time has gone by. Since we are told to find that time when the pebble is on the ground, we say that h = 0 since the height of something on the ground has no height at all. Then factor the quadratic.
Throw that into the quadratic formula or however you were taught to factor irrational quadratics (maybe completing the square?) to get that
t = 11.27869 sec and t = -10.52869 sec
Since we all know that time will never carry a negative value, we will disregard it and go with 11.27869 seconds. Not sure to where you are told to round.