Given:
4 rows of ten students.
Probability of a head or tail in a coin toss is 1/2
head: 20 students sitting in the first two rows as your sample
1/2 * 1/20 = 1/40
tail: 20 students sitting in the last two rows as your sample.
1/2 * 1/20 = 1/40
<span>Does every student have an equal chance of being selected for the sample?
</span>
Yes, every student have an equal chance of beings elected for the sample.
a) (2/5) x 35 = 14 students received invitations
b) 35-14 = 21 students didn’t receive invitations
X=amount of money Ofeila hasx-$12=(1/5)xLet's eliminate the fractions by multiplying both sides by 5...5(x-$12)=(5)(1/5)x5x-$60=xLet's subtract 5x from both sides...-5x+5x-$60=x-5x-$60=-4xLet's divide both sides by -4...(-$60)/(-4)=(-4x)/(-4)$15=x -< AnswerLet's check our work...x-$12=(1/5)x$15-$12=(1/5)($15)$3=$3
Im not sure what the answer is but dont open the link its a virus
