Imperfections in computer circuit boards and computer chips lend themselves to statistical treatment. For a particular type of board, the probability of a diode failure is

0. 04 and the board contains 200 diodes.

a) What is the mean number of failures among the diodes?

b) What is the variance?

c) The board will work if there are no defective diodes. What is the probability that a

board will work?

d) How many diodes are correct until we get the first diode failure?

e) What is the probability that we have at least 5 diodes until the first failure?

sorry, i don't know i just need points, i'm new here. chao

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

8496 cars

step-by-step explanation:

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.