Answer:
0.2611
Step-by-step explanation:
Given the following information :
Normal distribution:
Mean (m) length of time per call = 3.5 minutes
Standard deviation (sd) = 0.7 minutes
Probability that length of calls last between 3.5 and 4.0 minutes :
P(3.5 < x < 4):
Find z- score of 3.5:
z = (x - m) / sd
x = 3.5
z = (3.5 - 3.5) / 0.7 = 0
x = 4
z = (4.0 - 3.5) / 0.7 = 0.5 / 0.7 = 0.71
P(3.5 < x < 4) = P( 0 < z < 0.714)
From the z - distribution table :
0 = 0.500
0.71 = very close to 0.7611
(0.7611 - 0.5000) = 0.2611
P(3.5 < x < 4) = P( 0 < z < 0.714) = 0.2611
what is b? from the first equation in the system, y + 2 = b.
Answer:
your not showing the whole thing
Step-by-step explanation:
<h3>The recursive formula for this geometric sequence is:</h3>
<em><u>Solution:</u></em>
Given that,
-4, -24, -144, -864
To find: recursive formula for geometric sequence
Find the common ratio "r"
<em><u>The nth term of geometric sequence is given as:</u></em>
Where,
n is the nth term
is the first term
r is the common ratio
From sequence,
Therefore,
Where, n = 1, 2, 3, ....
Thus the recursive formula is found