A stock market analyst figures the probabilities that two related stocks, A and B, will go up in price. She finds the probability that A will go up to be 0.8 and the probability that both stocks will go up to be 0.3. What should be her estimate of the probability that stock B goes up, given that stock A goes up? (Enter your probability as a fraction.)

Over the weekend, Ashley has to finish her statistics and mathematics assignments. The probability that she will finish the statistics assignment is 0.65, the probability that she will finish the mathematics assignment is 0.70, and the probability that she will finish both assignments is 0.40. What is the probability that Ashley will: (a) not finish the mathematics assignment given that she has finished the statistics assignment. (b) finish the mathematics assignment given that she has not finished the statistics assignment.

Victoria plays college soccer. She makes a goal 70% of the time she shoots. Victoria is going to attempt two goals in a row in the next game. A = the event Victoria is successful on her first attempt. P(A) = 0.7. B = the event Victoria is successful on her second attempt. P(B) = 0.7. Victoria tends to shoot in streaks. The probability that she makes the second goal given that she made the first goal is 0.8.a. What is the probability that she makes both goals?  b. What is the probability that Victoria makes either the first goal or the second goal?

Pedro has just entered university and has been informed that there is a 30% chance of receiving a scholarship. In the case of obtaining it, the probability of obtaining a degree is 0.85, while in the case of not obtaining it, the probability of obtaining a degree is only 0.45. Tell Peter what the probability is that he will graduate.

At a restaurant, the probability that a person ordering coffee will ask for cream is 0.54. The probability that the customer will ask for sugar is 0.77. The probability that the customer will order both cream and sugar is 0.48.If a person orders coffee, what is the probability that the customer will ask for neither cream nor sugar?

ANSWER COMPLETELY FOR UPVOTE

The probability that a student passes mathematics is 2/3 and the probability that he passes biology is 3/4. if the probability of passing both courses is 1/2, what is the probability that he will pass either one of the courses?

The odds in favor of Frank McKinnis winning a hot dog eating contest are 2​:7.   a. Determine the probability that Frank will win the contest.   b. Determine the probability that Frank will not win the contest.

R5

Now you play toss-a-coin. If the coin comes up Heads, you win. If it comes up Tails, your friend wins.What is the probability that you win 4 games out of 10 now? This is a numerical question - give the answer in percent, and round to four digits after the decimal point