Reflect on your understanding of Module 2.  Depending on timing. You can answer in short phrases. Complete sentences are not required. a-c only request a single number. If you run out of time to answer this question, you can email  me the response after your exam is submitted.  The response is worth 5 points for completion. a. Evaluate your overall effort on Module 2 .    low 1  2  3  4  5 high b. Rate your time spent on learning statistics during Module 2.  low 1  2  3  4  5 high c. How do you think you performed on this exam? low 1  2  3  4  5 6 7 8 9 10 high   example 8=80% d. What have you found to be MOST helpful in your learning? e. What challenges are you experiencing? Please include any other comments or concerns.   The response for this problem will be scored by the instructor.

Complete this problem on a separate sheet of paper. Upload a single PDF file.  A 10% deduction will be assessed for incorrect file submission A simple random sample of seven drivers was selected. All seven drivers are insured with the same insurance company, and all have similar auto insurance policies. The following table lists their age (in years) and their monthly auto insurance premiums. Use technology to find values. (10 pts total)    Age (years) 25 35 45 55 30 40 60 Monthly auto insurance premium ($) 195 167 160 147 164 154 146 1 pt – Compute the linear correlation coefficient. Round to 3 decimals    2 pts – Explain the form, strength, and direction of the correlation.   2 pts – List the equation for the least squares regression line. Round the slope & y-intercept to 2 decimals.   2 pts – Interpret the meaning of the numerical value of slope in the least squares regression line. Explain in the context of the problem.   1 pt – Predict the monthly auto insurance premiums for a driver that is 90 years using the least squares regression line.   1 pt – Comment on the validity of using the least square regression equation to predict the monthly auto insurance premiums a 90 year old driver. Must use statistical idea to explain.   1 pt Calculate the coefficient of determination.   2 pts Explain the meaning of the coefficient of determination using context from this problem.

We do studies to gather information and draw conclusions. The type of conclusion we draw depends on the study method used: In an observational study, we measure or survey members of a sample without trying to affect them. In a controlled experiment, we randomly assign people or things to groups. One group receives a treatment and the other group does not. For the studies listed below, determine if they are experiments or observational studies.

A dermatologist will conduct an experiment to investigate the effectiveness of a new drug to treat acne. The dermatologist has recruited 36 pairs of identical twins. Each person in the experiment has acne and each person inthe experiment will receive either the new drug or a placebo. After each person in the experiment uses either the new drug or the placebo for 2 weeks, the dermatologist will evaluate the improvement in acne severity for each person on a scale from 0 (no improvement) to 100 (complete cure).  Identify the treatments experimental units response variable of the experiment   I will grade manaully.

Correlation does not imply ________.

Researchers collect data by interviewing athletes who have won Olympic gold medals from 1992 to 2016. Identify the type of data

The volume of a sample of gas, initially at 25 °C and 158 mL, increases to 450. mL. What is the final temperature of the sample of gas, if the pressure and amount of gas in the container is kept constant?

When 3.05 moles of CH4 are mixed with 5.03 moles of O2 the limiting reactant is CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

What is the name of Cr(NO3)3 ?

The strongest interactions between molecules of ammonia, NH3, are