HELP SOON The average weight of eleven people at a party is 138 pounds. When two people arrive late to the party, the average increase to 148. What is the average weight of the two people who arrived late?

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?