You install 2 new light bulbs: a 60 watt bulb and a 100 watt bulb. Let X be the lifetime of the 60 watt bulb and Y the lifetime of the 100 watt bulb. The package says that the expected lifetime of the 60 watt bulb is an exponential random variable with mean 200 days while the lifetime of the 100 watt bulb is an exponential random variable with mean 100 days. a) Write down the PDFs of X and Y. b) Compute the CDFs of X and Y. c) If fx is the PDF of X and Fy is the CDF of Y then P(X

Use the spider tool located on page 1 of this activity to draw a 12-pointed star for the new logo. (hint: if the spider rotates 360 degrees -- or 720 degrees or 1080 degrees -- she will be facing in the same direction in which she started. when the spider is done drawing, you want her to be facing in the same direction in which she started. she'll be making 12 rotations, all the same size, so each rotation must be some multiple of 360/12 = 30 degrees.) urgently. been stuck on this problem for around 45 minutes now.! it should be easy if you're smart enough

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain

Which function has the domain x> -11? y= x+ 11 +5 y= x-11 +5 y= x+5 - 11 y= x+5 + 11