A soft drink machine outputs a mean of 28 ounces per cup. The machine's output is normally distributed with a standard deviation of 2 ounces. What is the probability of filling a cup between 26 and 31 ounces? Round your answer to four decimal places.

the probability of filling a cup between 26 and 31 ounces is 0.7745

Step-by-step explanation:

Step 1: Sketch the curve.

The probability that 26<X<31 is equal to the blue area under the curve.

Step 2:

Since μ=28 and σ=2 we have:

P ( 26<X<31 ) = P ( 26−28 < X−μ < 31−28 )

⇒ P ( (26−28)/2 < X−μ/σ < (31−28)/2 )

Since Z= x−μ/σ , (26−28)/2 = −1 and (31−28) / 2 = 1.5 we have:

P ( 26<X<31 )=P ( −1<Z<1.5 )

Step 3: Use the standard normal table to conclude that:

P ( −1<Z<1.5 )=0.7745

Therefore , the probability of filling a cup between 26 and 31 ounces is 0.7745

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.