Mathematics, 19.02.2021 02:50, dondre54
A manufacturing company produces two types of phones; radio phones and plain phones and ships them out in boxes. Each box contains two phones of the same type. Every week, a quality control technician randomly selects a shipping box, records the type of phone in the box (radio or plain), and then tests the phones and records the number that were defective. It was determined that the probabilities of obtaining 0, 1 and 2 defective(s) for the radio phones were respectively 0.45, 0.07 and 0.01, while for the plain phones, the probabilities were respectively 0.37, 0.08 and 0.02. Assume that we define a random variable N to be the number of defective phones within a randomly chosen box. Calculate the mean and variance of the random variable N.
Answers: 2
Mathematics, 21.06.2019 16:30, Lpryor8465
Ahome improvement store rents itβs delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?
Answers: 1
Mathematics, 21.06.2019 18:30, budjasdatazaki467
Let f(x) = 3 β x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.
Answers: 1
Mathematics, 21.06.2019 20:00, tessafargo
Prove that the value of the expression 7^8β7^7+7^6 is divisible by 43.
Answers: 1
A manufacturing company produces two types of phones; radio phones and plain phones and ships them o...
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