According to the national health survey, 9.8 % of the population of 18-24 year olds in the us are left-handed. supposed you select 10 individuals form this popoulation and x is the number of persons who are left handed. how many left-handed people are expected to be selected? what is the variance and standard deviation of x? what is the probability that exactly 4 people are left-handed? what is the probability that at least 4 people are left-handed? what is the probability that at most two people are left-handed? given that at least 4 people are left-handed, what is the probability that exactly 4 are left-handed?

is means division by fractions

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.