The following table contains data on the number of violent c…

The following table contains data on the number of violent crimes that occurred in four cities during 2012. The table displays each city’s population (give your answer to 2 decimal places) Violent crime rates                                        Violent Crimes         Population      Rate per 100,000 population Portland, ME                     173                             66,143 Ann Arbor, MI                   227                           115,008 Tampa, FL                         2,162                         350,758 San Francisco, CA           5,777                         820,363 Washington, D.C             7,448                        632,323     a) Compute the rate of violent crime per 100,000 city residents in each city b) Which of the cities had the highest rate of violent crime in 2012 c) Why would it be inappropriate to directly compare the raw number of violent crimes for each city?

The speeds of 57 cars were measured (in km/h) on a city stre…

The speeds of 57 cars were measured (in km/h) on a city street. A numerical summary of the results is given below:   Descriptive Statistics: speed   Variable      N      N*       Mean        SE Mean        StDev speed           57      0          45.53         1.64                 12.38   Variable         Minimum       Q1           Median       Q3              Maximum speed               25.60               38.00       43.20            58.00        83.20   Do a calculation to decide whether the highest recorded speed, 83.20 km/h, would be a potential outlier if drawing a boxplot by hand for this data set. What do you conclude?  

Criminologists have long thought that living in a ‘broken ho…

Criminologists have long thought that living in a ‘broken home’ (i.e., non-two-parent home) is a strong risk factor for delinquency. The following cross-tabulation shows the joint distribution of family structure with self-report delinquent status:                                        Family Structure Delinquent No mother figure single mother two parents Total No 3254 1300 346 4900 Yes 3006 1524 570 5100 Total 6260 2824 916 10000     a) What is the probability that a person lives with two parents? b) What is the probability that someone is not a delinquent? c) What is the probability that someone lives with no mother parent or a single mother? d) P (not a delinquent | no mother parent) e) What is the probability that someone is a delinquent or lives with no mother figure? f) What is the probability that someone is a delinquent and lives with no mother figure? g) P (no mother parent|not a delinquent)    

2.  True or False.  The assessment and evaluation process be…

2.  True or False.  The assessment and evaluation process begins in general education.  Before a student may be referred for special education or related services, the public school must document that all general education options have been attempted and that the student is still not successful in the general education curriculum.