Ethnocentrism refers to the belief that one’s own culture or social group is inherently superior to others.

Security threat groups may disrupt prison order, threaten staff and inmates, and contribute to institutional violence.

Human smuggling generally involves individuals who voluntarily cooperate with smugglers in order to cross borders illegally.

The Pennsylvania System emphasized rehabilitation through solitary confinement and reflection, whereas the Auburn System relied on congregate labor conducted under conditions of silence.

Direct-supervision jails generally increase inmate violence because correctional officers have less contact with inmates.

Drug courts provide judicially supervised treatment alternatives for certain substance-abusing offenders and are designed to reduce recidivism.

A sleep time of 15.9 hours per day for a koala bear is at the 10th percentile of sleep times for all koala bears. Assuming the distribution is normal with a standard deviation of 0.5 hour, approximately what is the mean sleep time, in hours per day, for koalas?

Europol serves as a cooperative law enforcement organization that assists member states of the European Union.

A manufacturer of dish detergent believes the height of soapsuds in the dishpan depends on the amount of detergent used. A study of the suds’ height for a new dish detergent was conducted. Seven pans of water were prepared. All pans were of the same size and type and contained the same amount of water. The temperature of the water was the same for each pan. An amount of dish detergent was assigned at random to each pan, and that amount of detergent was added to the pan. Then the water in the dishpan was agitated for a set amount of time, and the height of the resulting suds was measured. A plot of the data and the computer output from fitting a least squares regression line to the data are shown below.   Write the equation of the fitted regression line. Interpret the slope in context of the question. Interpret the correlation coefficient in the context of the question. Interpret the coefficient of determination in the context of the question. Interpret s = 2.0546 in the context of the question. Predict for 4 grams of detergent. Estimate the residual for 4 grams of detergent? Justify your answer. Use the given information to respond to parts A, B, C, D, E, F and G. Label all parts and show all work.     Copyright © 2006. The College Board. www.collegeboard.org

Mrs. Morales, a professor at a local college, was concerned about the test security of the statistics course she teaches. She decided to compare two lockdown browsers that could be used to prevent students from cheating. She is concerned that the older lockdown browser, OLB, may be weaker than the newer lockdown browser, NLB. One measure of how well a lockdown browser works is the amount of time a student remains on one question, in seconds. A very short question duration may indicate that a student is copying quickly from another website, which means that the lockdown browser needs to be more secure. Therefore, Mrs. Morales conducted a study of the two types of lockdown browsers. She randomly collected this information from students who used the lockdown browser to take a particular one-question quiz over the previous six months. For each quiz taken by the sampled students, Mrs. Morales collected the amount of time students spent on the quiz question, in seconds, and the type of lockdown browser used. The table displays the summary statistics for her study. Summary Statistics Lockdown Browser s Min Q1 Median (Q2) Q3 Max OLB 629 768 30 512 715 793 2100 NLB 914 803 30 674 854 1365 2531   Use the given information to respond to parts A, B, and C. Label any subparts (e.g., i and ii) that may be present. Use the table to respond to the following. Show the work that leads to your answers.  Determine whether there are outliers using the 1.5 × IQR rule for the OLB Lockdown Browser. Determine whether there are outliers using the 1.5 × IQR rule for the NLB Lockdown Browser. Use the table to respond to the following. Compare the distance from Q1 to the median and the distance from the median to Q3 for the OLB Lockdown Browser. Compare the distance from Q1 to the median and the distance from the median to Q3 for the NLB Lockdown Browser. Explain how these comparisons can be used to select which measure of variability—standard deviation, range, or IQR—would be the best representation for both lockdown browsers. Mrs. Morales decides to compare the medians of the two lockdown browsers to determine which lockdown browser is best. Use the table and your responses to part A and part B to determine whether Mrs. Morales is using the correct measure of center to compare the distributions. Justify your answer using both lockdown browsers.   Copyright © 2026. The College Board. www.collegeboard.org