A design engineer gives you the following data for your standard product. You know from numerous previous samples that its reliable life is normally distributed with a mean of 335 days and a standard deviation of 19.2 days. On a recent production run, she tested the duration of random samples with these results: Sample 1 Sample 2 Sample 3 Sample 4
338.0 321.5 362.5 352.0
335.5 334.0 341.8 359.0
332.1 355.4 312.0 329.4
364.6 309.0 340.9 341.3
What is the sample mean service life for sample 2

step-by-step explanation:

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

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.

ask the math teacher she or he would know lol.

step-by-step explanation: