In a sample of 30 coin flips, heads came up 6 times. what is the sample proportion for heads?
a. 0.6
b. 0.5
c. 0.1
d. 0.2

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189