There are 10 lightbulbs and 2 of them are defective. You test the lightbulbs one by one until you find both lightbulbs. Let X count the number of lightbulbs you test to find both lightbulbs. What is the probability that you find both defective lightbulbs after testing 2 lightbulbs?

Q: Suppose a jar contains 12 red marbles and 30 blue marbles. If you reach in the jar and pull out 2…

A: Solution: From the given information, a jar contains 12 red marbles and 30 blue marbles. Total…

Q: Suppose a jar contains 5 red marbles and 31 blue marbles. If you reach in the jar and pull out 2…

A: Solution

Q: There are 7 male students and 22 female students in a class. If you choose 2 students at random,…

A: We have given that 2 Number of Male students =7 Number of female students =22 Total possible cases =…

Q: If the probability of Ali and Hamad winning in a competition is 0.37 and the probability of losing…

A: It is given that the   probability of Ali and Hamad winning in a competition is 0.37 i.e. P(Ali and…

Q: If the probability that the Yankees will win a baseball game is 60%, find the probability that the…

A: The probability that Yankees will win a baseball game is 60%, that is PWinning=0.60.

Q: If you roll two dice, each with 8 faces/sides, what is the probability that you will get a sum of…

A: Given that If you roll two dice, each with 8 faces/sides, than we have to find the probability that…

Q: find the probability that the educator is a female or an associate professor

A: We have given that an educators at a college were classified according to gender and academic rank.

Q: Alex decides to go to a casino and play his 3 favorite slot machines. He knows from experience that…

A: A probability is likelihood of occurrence of an event.

Q: Suppose a jar contains 648 red marbles and 292 blue marbles.  If you reach in the jar and pull out 2…

A: A jar contains 648 red marbles and 292 blue marbles, there are totally 940 marbles. Two marbles are…

Q: Steve has 12 biscuits in a tin. There are 5 digestive and 7 chocolate biscuits. Steve takes two…

A: Given that, Total number of biscuits = 12 5 digestive biscuits and 7 chocolate biscuits We to find…

Q: if the probabilty that junior goes to the grocery store is 0.6 and the probability that he buys…

A: P(junior goes to the grocery store) = 0.6 P(buys strawberries given he is at the grocery store) =…

Q: Three balls are selected randomly from a bag containing 4 red balls and 7 blue ones. Find the…

A: From the provided information, Red balls = 4 Blue balls = 7 Total balls = 11

Q: Please show your solution. A petroleum company exploring for oil has decided to drill 2 wells, one…

A: Given that  P(first attempt) = 0.25 P(Second attempt | First attempt) = 0.85

Q: In a box of 30 chocolates, there are 5 chocolate covered cherries, 10 are filled with caramel, 15…

A: Since I eat the first piece, so this problem is using without replacement.  I can pick any 2 pieces…

Q: A bag contains 2 cherry, 3 lemon, 4 grape, and 5 watermelon candies. You reach in and grab a handful…

A: Total number of cherries = 2 The probability of getting a cherry = 2/14 = 0.1429 n = 3

Q: in a break room there are 3 bags of pretzels 2 bags of doritos and 4 bags of popcorn .find the…

A: Total number of bags = 9 (i.e. 3+2+4) Number of pretzels bags = 3 Number of Doritos  bags= 2 Number…

Q: If you roll 6 six-sided dice, find the probability that the sum of the dice is greater than 7.

A: A six-sided die is rolled 6 times. The objective is to find the probability that the sum of the dice…

Q: Alex decides to go to a casino and play his 3 favorite slot machines. He knows from experience that…

A: Given Alex decides to go to a casino and play his 3 favorite slot machines.   Also given probability…