Javier read a report that said the probability that a randomly selected American is left-handed is 14%, percent. He was curious how many left-handed students to expect in a class of 30 students.

He simulated 100 classes of 30 students where each student selected had a 0.14 probability of being left-handed.

Javier counted how many left-handed students were in each simulated class. Here are his results:

Use his results to estimate the probability that there are 7 or more left-handed students in a class of 30 students.

Give your answer as either a fraction or a decimal.

P(7 or more left handed) = (answer)

you answer is a

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

the radius is 2 times the diameter.

step-by-step explanation:

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870