Our class has 21 students of which 9 are civil engineering majors. suppose i need to randomly select one student per day from this class to have lunch with me. (a) assume that i require five different students from monday to friday. let x be the number of students of the sample of 5 that are civil engineering majors. what is the appropriate random variable to model x? what is e(x)? (b) assume that i do not require five different students. same student can go on different days. let y be the number of times from monday to friday that i have lunch with civil engineering majors. what is the appropriate random variable to model y ? what is e(y )?

How to prevent onions from making you cry chill the onions in the refrigerator for 30 minutes before peeling or chopping them. sulfuric vapors move slower in the cold—think about how garbage smells worse during hot weather. leave the onion root intact until the last possible moment to prevent irritants from escaping into the air. the root contains the largest concentration of sulfuric compounds in an onion. chop or cut the onion with a sharp knife. fast, clean slicing puts less pressure on the onion tissue and minimizes the release of sulfuric compounds. a sharp knife also allows you to expedite your slicing and reduce your exposure to the onion fumes. open a window or light a scented candle close to your chopping station. the hot flame of a candle will attract tear-causing vapor and will reduce the amount of vapor circulating in the air. what can be done to these instructions to make them easier to read at a glance? deleting everything except the first sentences of each numbered step eliminating the numbers and using bullets using illustrations instead of text changing nothing

What word or phrase is modified by the prepositional phrase in the sentence below? marisol's puppy likes napping under the couch because it is warm and cozy

Read the excerpt from martin luther king jr.’s “i have a dream” speech. the negro is still languishing in the corners of american society and finds himself an exile in his own land. and so we’ve come here today to dramatize a shameful condition. the emotional connotation of the underlined word king express his a. indecision. b. hopefulness. c. spirituality. d. outrage.