Urn 1 contains 5 white and 6 black balls, while urn 2 contains 8 white and 10 black balls. Two balls arerandomly selected from urn 1 and are placed into urn 2. If 3 balls are randomly selected from urn 2,compute the expected number of white balls selected from urn 2.Hint : LetAibe the event that theith white ball is selected from urn 1 and placed into urn 2 andthen selected from urn 2. LetBjbe the event that thejth white ball from urn 2 is selected. Define theindicator variables

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?