A manufacturing company produces fluorescent light bulbs and claims that the average lifetime of its bulbs is 1600 hours with a standard deviation of 120 hours. Bulb lifetime is normally distributed, N(100, 120): If a single bulb is randomly selected, what is the probability that its lifetime is between 1480 hours and 1720 hours?

If 25 bulbs are randomly selected, what is the probability that the mean lifetime is between 1480 hours and 1720 hours?

3. If 100 bulbs are randomly selected, what is the probability that the mean lifetime is between 1480 hours and 1720 hours?

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

she will most likely have 33  

step-by-step explanation:

15 units use socratic

step-by-step explanation: 15 units

throw the computer

step-by-step explanation: