Flavia wanted to know if the first sample quartile (or Q1) was an unbiased estimator of the first population quartile. She started with a large population of normally distributed grades, the first quartile of which was Q = 70. She then took a random sample of 6 tests and calculated the first quartile of the sample. She replaced those exams and repeated this process a total of 50 times. Her results are summarized in the dot plot below, where each point represents the first sample quartile of a sample of 6 exams. Based on these results, does the first sample quartile appear to be a biased or unbiased estimator of the first population quartile? Track; the first population quartile is 70.

70,000 + 6,000 + 800 + 30

step-by-step explanation:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

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.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5