(06.07 MC)  A sample of 12 cars was taken, and the horsepower to miles per gallon was recorded. The computer output for regression is below: What is the equation of the regression line? (4 points)

(05.02 LC)  Given a population mean of 27.1 with a standard deviation of 8.4 and a sample size of 10, answer these questions: Part A: What is the standard deviation of the sampling distribution of x̄? Show your work. (5 points) Part B: What does the sample size need to be if you want the standard deviation of the sampling distribution of x̄ to be 2.8? Show your work. (5 points) (10 points)

Which of the following is one of the 4 R’s of trauma based care that is important to understand when providing care for a youth in the foster system

As a society the best way to deal with stress is for humans to completely minimize all stress/stressors in ones life.  

(04.02 MC)  A coin is weighted so the probability of heads is 0.65. The coin is tossed 15 times, and the number of times heads shows is recorded. This procedure is repeated 100 times with the number of times heads shows noted each time. What kind of distribution is simulated? (4 points)

For the function , find the difference quotient ​ ​

(06.07 MC)  A statistician wants to determine the relationship between typing speed, in words per minute, and the time, in minutes, it takes to type one page of a specific book. Twenty-five trials are completed and the correlation coefficient between typing speed and time is determined to be -0.622. Therefore, slower typing speed was related to greater time. How is the correlation affected if the units for time are changed from minutes to seconds? (3 points)

(04.06 MC)  The mean household income for a certain state is $71,000 with a standard deviation of $10,000. Assuming a Normal distribution, about 95 percent of all households have an income over what amount? (4 points)

(06.06 LC)  A cell phone company is interested in the relationship between the number of texts per minute for their customers (y) and customer age. Based on the collected data, the least-squares regression line is ŷ = 3.27 + 2.14x, where x is the number of years by which age exceeds 12. Which of the following statements best describes the meaning of the slope of the least-squares regression line? (3 points)

(04.06 MC)  The mean household income for a certain state is $69,000 with a standard deviation of $10,000. Assuming a Normal distribution, about 95 percent of all households have an income over what amount? (4 points)