In a binomial distribution with sample size 20 and probability of success of .67, if you want to find the probability of 12 successes, you would calculate:

In statistics, a population does not always consist of people.

A bowl has 15 marbles. 6 are red, 5 are blue, and 4 are yellow. a) If you pick one marble randomly, what is the probability it is red or blue? b) If you randomly pick two marbles in a row, WITH REPLACEMENT, what is the probability you pick two yellow ones in a row? c) If you randomly pick two marbles in a row, WITHOUT REPLACEMENT, what is the probability that you pick a blue one and then a yellow one? SHOW YOUR WORK!

In a binomial distribution, if the probability of success, p, is .63 then probability of failure, q is:

Which kind of sample allows each unit in a population to have an equal chance of being picked, and eliminates bias?

What is the tension T1T_1​ in the horizontal cable supporting the [w]-N cat burglar, given that

In order to assess the nutritional quality of meals offered by meal kit subscription services in Australia, researchers randomly selected 12 meals from each of the five meal kit subscription services available in Australia and analyzed the nutritional quality of each meal. For the selected meals, the average number of servings of vegetables was 2.7 What type of sampling was used?

Researchers at a public university in New England wanted to study the prevalence of food insecurity among students at their university. They posted flyers in several locations around campus asking students to participate in the study. The 237 students who responded to the flyers were asked to complete a survey concerning access to food and contributing factors. Of the students who completed the survey, 36 were food insecure. What type of sampling was used?

From the 10 questions below, answer ones that add up to >=30 [because the midterm is worth 30 points overall]. BUT, additionally/optionally, you can answer *even more* if you like. In other words, answer 8 out of the 10 questions; optionally, answer 1 more, and 1 more after that. We will add up all your points from all your answers (even partially correct ones) – if your score exceeds 30, it will be ‘capped’ at 30 (ie. 30 is the highest possiblescore). OMG – such a deal 🙂 You *do* need to stop (as opposed to, continue) writing after the time’s up. If you keep writing past the 1 hour mark, you will get a 0 for the entire exam. This is how we ensure fairness. You can use your cheatsheet, nothing else. If you are observed cheating, you’ll get a 0 for the exam, AND, be reported to OAI [fyi: we report first, THEN notify you]. Again, it’s how to ensure fairness – others aren’t ‘skipping the line’, you shouldn’t either. Please *DO NOT* cheat – as they say, FAFO if you want. Look for it – each qn has *data* in it (because: CS585: ‘Database Systems’) 🙂 Hope you *enjoy* the exam! Allowed 1 standard 8.5×11, both sides, typed/handwritten cheat sheet. Midterm Exam

Choose two of the following works–“The Cry of the Children,” “The Searchlight,” “The Legacy,” “The Prophet’s Hair”–and discussion a major theme that is developed in each (one theme for each work). How does the author develop the theme? Give examples from the text.