Approximately 10% of all people are left-handed ("11 little-known facts," 2013). Consider a grouping of fifteen people. a.) State the random variable. X = b.) Show that this is a binomial. Find the probability that c.) None are left-handed. d.) Seven are left-handed. e.) At least two are left-handed. f.) At most three are left-handed. g.) At least seven are left-handed. h.) Find the mean of X. i.) Find the variance of X. j.) Find the Standard deviation of X.

both graphs increase on their domain

neither graph has a y-intercept

step-by-step explanation:

the following points can be visualized easily from the graph

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720

b segment jm is correct i think