You and a friend play a game where you each toss a balanced coin. if the upper faces on the coins are both tails, you win $8; if the faces are both heads, you win $4; if the coins do not match (one shows a head, the other a tail), you lose $2 (win (−$ calculate the mean and variance of y, your winnings on a single play of the game. note that e(y) > 0.

Mean: $2

Variance: 18

Step-by-step explanation:

There are 4 possible outcomes:

TT (both tails)

TH (tail, head)

HT (head, tail)

HH (head, head)

Find the probabilities:

Complete the table

The mean is

The variance is

4.6875 pounds

step-by-step explanation:

hey there!

if she's saving for six months, let's divide the total number we need for the trip by six, dividing it into the amount that needs to be saved for each month.

500 ÷ 6 =

she needs to save at least this amount each month, so we should use this symbol: ≥

let x be the amount she saves each month.

your final answer is x ≥

hope this !