The time between phone calls at Jawwal center has an exponential distribution with average of 40 40
seconds. What is the probability that the time is at least 55
55
seconds?
Select one:

a.
0.2528
0.2528

b.
0.4832
0.4832

c.
0.4169
0.4169

d.
0.7472
0.7472

e.
0.3189

i dont know if you cant find a way its best to actually add all of them start from 105 tho

step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest

answer: 1 + 1 = 11

step-by-step explanation:

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)