Below are two run charts for a process. For each one, answer the following question: Based on the run chart, does the process appear to be statistically stable? 2.5 2 1.5 1 0.5 0 NAMA mm 05 10 15 20 25 30 35 40 O No, because there are 8 consecutive points all above or below the median line. Yes, it appears to be within statistical control. No, because there are 6 consecutive points that alternate between up and down. No, because it exhibits increasing variation. No, because there is an exceptional value. O No, because it exhibits an upward or downward trend. O No, because it has an upward or downward shift. O No, because it exhibits a cyclical pattern.

An experiment was conducted to determine if exposure to an advertisement would change attitude toward a product. Each subject’s attitude before and after exposure to the advertisement was recorded, using a valid ten point scale. The results indicated: Subject Attitude Post Exposure Attitude Pre Exposure   1 6 4 2 8 5 3 6 6 4 4 3 5 7 2 6 6 3 7 9 6 8 7 6 9 8 5 10 8 6   Set up hypotheses and test to determine if the mean attitude toward the product increased as a result of exposure to the advertisement. (Note: these samples must be regarded as dependent, as each subject served as both a control (pre-exposure) and a treatment (post exposure).   Fully interpret your result.

The following data set is scaled scores from the SAT test in 2018: Student 1: 500 Student 2: 580 Student 3: 450 Student 4: 750 Student 5: 690 Student 6: 800 SAT scores are scaled from 200 to 800 points. How would you best classify this data?   a. Cross-sectional Data   b. Time Series Data   c. Qualitative Data   d. Longitudinal Data   e. None of these

The increasing annual cost (including tuition, room, board, books and fees) to attend college) to attend college has been widely discussed in many public including Money magazine. The following random samples show the annual cost of attending private and public colleges. Data are in thousands of dollars. Click on the datafile logo to reference the data. Round degrees of freedom to the preceding whole number. DATA file Private Colleges 52.8 30.6 20.3 43.2 Public Colleges 45.8 22.8 22.0 25.8 45.0 33.3 37.8 50.5 28.2 15.6 18.5 44.0 25.6 42.0 a. Compute the sample mean and sample standard deviation for private and public colleges. Round your answers to two decimal places. F1 = 24.1 28.5 21.8 14.4 F2 = S₁ = S₂ b. What is the point estimate of the difference between the two population means? Round your answer to one decimal place. Interpret this value in terms of the annual cost of attending private and public colleges. $ c. Develop a 95% confidence interval of the difference between the…