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An elementary school is offering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 97 students in the school. There are 33 in the Spanish class, 36 in the French class, and 17 in the German class. There are 13 students that in both Spanish and French, 4 are in both Spanish and German, and 6 are in both French and German. In addition, there are 2 students taking all 3 classes.
If one student is chosen randomly, what is the probability that he or she is taking at least one language class?
If two students are chosen randomly, what is the probability that at least one of them is taking a language class?
Distinguish the various observational study designs and the randomized controlled trial with regard to validity and feasibility.
Use descriptive statistics to summarize the data from the two studies. What are your preliminary observations about the depression scores?
The amount of corn chips dispensed into a 10 ounce bag by the dispensing machine has been identified at possessing a normal distribution with a mean of 10.5 ounces and a standard deviation of .2 ounces.
a 6-faced die is rolled two times. let a be the event that the outcome of the first roll is greater than 4. let b be
Provide a business example that you can apply regression to. State the null and alternative hypothesis using the appropriate phrasing for the type of regression chosen.
In a Singapore Edition of Business Times, diamond pricing we explored. The price of a diamond is based on the diamond's weight, color, and clarity. A Simple random sample of 18 one-half-carat diamonds had the following prices, in dollar's
According to the historical data, the life expectancy in Argentina is equal to the life expectancy in Bolivia. A new study has been made to see whether this has changed.
State the hypotheses. (c) State the decision rule and sketch it. (d) Find the test statistic. (e) Make a decision. (f) Find the p-value and interpret it.
A coin is flipped 5 times in a row. What is the probability that it will come up heads all 5 times? For the data in question above, calculate the Sum of Squares Error (SSE).
What is the difference between common cause variation and special cause variation?
Find the probability of a type I error α if the true proportion is p=0.6.
If the politician is correct, what is the chance that you would observe 9 or fewer accidents with a teenager behind the wheel?
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