1) Assume that the average age of offenders at prison admissions in the state of Florida is 30

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1) Assume that the average age of offenders at prison admissions in the state of Florida is 30. Use the data to perform a hypothesis test to determine if the average age of offenders at prison admissions in your sample is significantly different from the average age in the offender population in Florida. The variable that measures the average age of offenders at prison admission is AGEADMIT. Use a .05 level of statistical significance. Run the one-sample t-test in Excel. In your summary, please discuss the null hypothesis, alternative hypothesis, the result of this hypothesis test, and interpret the result.

 

 

1. Assume that the average length of jail in pretrial in the state of Florida is 90 days. Use the data to perform a hypothesis test to determine if the average length of jail in pretrial in your sample is significantly different from the average length of jail in pretrial in Florida. The variable that measures the average length of jail in pretrial is JAILCREDIT. Use a .05 level of statistical significance. Run the one-sample t-test in Excel. In your summary, please discuss the null hypothesis, alternative hypothesis, the result of this hypothesis test, and interpret the result.

 

 

1. Conduct an independent sample t-test (alpha= .05) in Excel to determine whether there is a significant difference in the length of jail in pretrial between White and Black offenders. For this t-test, assume that the variances of the two groups are unequal. In your summary, please discuss the null hypothesis, alternative hypothesis, the result of this hypothesis test, and interpret the result.

Variable Name	Type of Variable	Variable Label	Value Labels	Values Explanation
County	Character	County of Sentence	NA	Literal name of county
Sex	Character	Sex of Offender	NA	Literal name of sex - Male, Female
Race	Character	Race of Offender	NA	Literal name of race - White, Black, Chinese, Nat. Amer. Hispanic, All Others, Unknown
Sentence	Numeric	Length of Sentence in Months	NA	Sentence length in months, except  9999998 = Life, 9999999 = Death
Offense	Numeric	Primary Offense	1 = Murder
			2 = Sex Offense
			3 = Robbery
			4 = Other Violent
			5 = Burglary
			6 = Property
			7 = Drugs
			8 = Weapons
			9 = Other Crimes
JailCredit	Numeric	Length in Jail Pretrial	NA	In Days
AgeAdmit	Numeric	Age of Offender at Prison Admissions	NA	In Years

Excel link for data: https://arizonastateu-my.sharepoint.com/:x:/g/personal/gsmoral1_sundevils_asu_edu/EbuuHsFtjAVAuD7sj4K0YfIB2FpU6GboA1grf-UF11OdYA?e=2dwBIe