Crime rates: The FBI computed the proportion of violent crimes in the United States falling into each of four categories. A simple random sample of 500 violent crimes committed in California were categorized in the same way. The following table presents the results. Category U.S. Proportion California Frequency Murder 0.013 5 Forcible Rape 0.051 23 Robbery 0.360 206 Aggravated Assault 0.576 266 Hint, form a row of expected by multiplying proportions above times 500 The p value for running the Goodness of Fit Test for this data is: 0.0606 0.1103 0.0018 6.95 E-4
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We do this by multiplying the U.S. proportion for each category by the total number of crimes in the California sample (500). For Murder: 0.013 * 500 = 6.5 For Forcible Rape: 0.051 * 500 = 25.5 For Robbery: 0.360 * 500 = 180 For Aggravated Assault: 0.576 * 500 = Show moreā¦
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Crime rates: The FBI computed the proportion of violent crimes in the United States falling into each of four categories. A simple random sample of 500 violent crimes committed in California were categorized in the same way. The following table presents the results. Category | U.S. Proportion | California Frequency Murder | 0.013 | 5 Forcible Rape | 0.051 | 23 Robbery | 0.360 | 206 Aggravated Assault | 0.576 | 266 Can you conclude that the proportions of crimes in the various categories in California differ from the United States as a whole? Use the 0.05 level of significance. Where do you live? The U.S. Census Bureau computed the proportion of U.S. residents who lived in each of four geographic regions in 2010. Then a simple random sample was drawn of 1000 people living in the United States in 2017. The following table presents the results: Region | 2010 Proportion | 2017 Frequency Northeast | 0.179 | 173 Midwest | 0.217 | 205 South | 0.371 | 384 West | 0.233 | 238 Can you conclude that the proportions of people living in the various regions changed between 2010 and 2017? Use the 0.05 level of significance.
Maitreya E.
5. Violent Crimes Shown are the ten U.S. cities (with population over 100,000) with the fewest number of violent crimes reported in 2010. Find the mean, median, mode, and midrange of the data. Temecula, CA 74; Irvine, CA 120; Murrieta, CA 99; Cary, NC 120; Surprise, AZ 106; Amherst, NY 121; Round Rock, TX 116; Simi Valley, CA 129; Frisco, TX 119; Norman, OK 132.
Qudsiya A.
Violent Crime Rates Use the data in Table 17 regarding the violent crime rates in 2003 to answer the following. (a) Find and interpret the 30 th percentile. (b) Find and interpret the 85 th percentile. (c) Find and interpret the 5 th percentile. (d) What is the percentile rank of the state of New Mexico? (e) What is the percentile rank of the state of Rhode Island?
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