You must show your all work including the ICE table for this problem.  Place the setup and the calculations for this problem on paper (give the number of the question and show all your work) and enter the final answer here on Canvas.  When you are done the exam, take a picture of your work and upload it into the exam 2 work upload area. The answer you have here for the question(s) must match the work you provide in the upload area. (Keep in mind that order to get full credit your must upload your work.   Determine the pKa of dichloroboric acid. The lab at UNAC has found that when they dissolve dichloroboric acid in water it has a pH of [ph] when the concentration is [M] M.  (Enter you answer with 2 decimal places and no units)  

A random variable x represents the number of cars owned by a family. Assume that x can take on five values: 0, 1, 2, 3, 4. A partial probability distribution is shown below: (2 pts each) x 0 1 2 3 4 p(x) 0.2 0.1 0.3 ? 0.1   Find the probability that a family owns three cars. Calculate the mean. Calculate the standard deviation. What is the probability that a family owns more than two cars?      What is the probability that a family owns at most 3 cars? Find the probability that a family owns between 1 and 3 cars, inclusive? Find the probability that a family owns no more than one car.

Two hundred single-sport athletes were cross-classified according to gender as follows: (12 pts; 2 pts each) Gender Swimmer (S) Runner (R) Cyclist (C) Total Male (M)  25 60 25 110 Female (F) 20 50 20 90 Total 45 110 45 200 An athlete is selected at random. a. What is the probability that the athlete is a runner? b. What is the probability that the athlete is a female runner? c. If the athlete is known to be a runner, what is the probability that the athlete is female? d. What is the probability that the athlete is male, a swimmer, or both? e. Are the events being a female and being a swimmer mutually exclusive? Justify your answer.  f. Are the single-sport type and gender of athletes independent? Justify your answer. 

Zoroastrianism was a popular and influential religion in ancient Persia.

Which of the following protocols transfers files without any authentication or security?

Cast iron and paper are both credited as having being invented and first used in the region of ________.

Qin rule was very progressive and completely eradicated the caste system in ancient China.

The organization where you are currently working as a network administrator has a class A network address 10.0.0.0 with 40 subnets. You want to add another 60 new subnets to the network. You would like to still allow for the largest possible number of host IDs per subnet. Which of the following subnet masks will you choose in this scenario?

Which of the following refers to any router outside an organization’s AS(autonomous system), such as a router on the Internet backbone?

You are working as a network analyzer for an ISP. A client has approached you to set up a network connection for a bank with offices around the state. The network needs to connect these offices with each other in order to gather transaction and account information into a central database. Which of the following connections will you provide in this scenario?