b) If the probability of germinating a seed of a pea plant is 0.85, how many seeds out of 1000 will germinate?
Answers
Step-by-step explanation:
Seeds generally "wake up" and germinate when soil ... Illustration 1: Steps of seed germination. If ... Some growers will put plants outside for 5-7 days prior to planting.
1000 × 0.85 karlo ab
Answer:
We have
A
1
:
A
2
:
A
3
= 4 : 4 : 2
P
(
A
1
)
=
4
10
,
P
(
A
2
)
=
4
10
a
n
d
P
(
A
3
)
=
2
10
where
A
1
,
A
2
and
A
3
denote the three types of flower seeds.
Let E be the event that a seed germinales and
¯
E
be the event that a seed does not germinate.
∴
P
(
E
/
A
1
)
=
45
100
,
P
(
E
/
A
2
)
=
60
100
a
n
d
P
(
E
/
A
3
)
=
35
100
and
P
(
¯
E
/
A
1
)
=
55
100
,
P
(
¯
E
/
A
2
)
=
40
100
a
n
d
P
(
¯
E
/
A
3
)
=
65
100
(i)
∴
P(E) =
P
(
A
1
)
P
(
E
/
A
1
)
+
P
(
A
2
)
P
(
E
/
A
2
)
+
P
(
A
3
)
P
(
E
/
A
3
)
=
4
10
45
100
+
4
10
60
100
+
2
10
35
100
=
180
1000
+
240
1000
+
70
1000
=
0.49
(ii)
P
(
¯
E
/
A
3
)
= 1 -
P
(
E
/
A
3
)
= 1 -
35
100
=
65
100
(iii)
P
(
A
2
/
¯
E
)
=
P
(
A
2
)
.
P
(
¯
E
/
A
2
)
P
(
A
1
)
.
P
(
¯
E
/
A
1
)
+
P
(
A
2
)
.
P
(
¯
E
/
A
2
)
+
P
(
A
3
)
.
P
(
¯
E
/
A
3
)
=
4
10
.
40
100
4
10
.
55
100
+
4
10
.
40
100
+
2
10
.
65
100
=
160
1000
220
1000
+
160
1000
+
130
1000
=
160
/
1000
510
/
1000
=
16
51
=
0.313725
=
0.314