when you flip a biased coin the probability of getting a tail is 0.2. How many times would you expect to get tails if you flip the coin 180 times?

Me i'm timed ! a. -2 to 1 b. -1.5 to 0.5c. 0 to 1d. 0.5 to 1.5

Pleas its really urgent and i would really appreciate it! what is the value of x? enter your answer in the box. x =

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq less than 132. the probability that a randomly selected adult has an iq less than 132 is?