Suppose that D is a random variable. Given that P(D > 4.3) = 0.025, find P(Ds 4.3). ..... O A. 0.025 B. 0.975 O C. 0.488 O D. O

A sample of n = 25 scores is selected from a population with μ = 50 and σ = 10. The probability of obtaining a sample mean greater than 55 is p = ______. a. .0057 b. .3002 c. .0069 d. .0062

Consider the following random experiment: we toss a two-sided coin (H on one side and T on the other side) n = 3616 times. In any given toss, the probability the coin comes up H is p = P(H) = 0.3. Each time the coin comes up H we give Tom 2 dollars and each time the coin comes up T we take from Tom 1 dollar (so Tom either gets 2 or gets -1, i.e., loses 1 dollar). How many dollars do we expect Tom will get on "average", i.e., per experiment?

A sample of n = 36 scores is selected from a population with µ = 50 and σ = 24. The probability of obtaining a sample mean greater than 66 is p = ________. a. .9826 b. .00003 c. .49997 d. .99997