TecArt Three drivers competed in the same fifteen drag races. The mean and standard

deviation for the race times of each of the drivers are given.

Driver A had a mean race time of 4.01 seconds and a standard deviation of 0.05

seconds

Driver B had a mean race time of 3.96 seconds and a standard deviation of 0.12

seconds

Driver C had a mean race time of 3.99 seconds and a standard deviation of 0.19

seconds.

a.

Which driver had the fastest typical race time?

b.

Which driver's race times were the most variable?

c.

Which driver do you predict will win the next drag race? Support your

prediction using the Inean and standard deviation.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

no solution

step-by-step explanation:

there is not enough information in the problem to solve.

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.