A coin is tossed 20 times and lands on heads 6 times . Use two tailed test with a 5% significance level to determine whether there is sufficent evidence to conclude that the coin is biased.

$15 each

step-by-step explanation:

$45/3 children= $15 each

the answer is 1/4

step-by-step explanation:

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.