Normal random variable with expected value
Suppose X is a normal random variable with expected value 7 and standard deviation 3. Then calculate the following porbabilities.
a) P(X <0)
b) P(6 < X < 9)
c) P(|X-6| <1)
d) P(|X-6|>1)
e) P(3X-1 > 20)
f) P(x^2 > 49)
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What is the critical value of z in the previous question? Report the critical value CLOSEST to your calculated z-score. (Answer to 2 decimal places.)
A 380-liter tank contains steam, initially at 300 kPa and 400°C. Determine time (seconds) at which 75% of the initial mass of steam remains in the tank.
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Monochromatic light of 630 nm wavelength is used. the same slit, illuminated by new monochromatic light source, produces a diffraction pattern with the second minimum at a 60 ° angle from the central maximum. what is the wavelength of this new
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