Lower than average, Mathematics

A local police precinct has seen a recent enhance in the number of complaints filed regarding how officers are interacting with the public. Before addressing the issue, the commander needs to know if the issue is wide spread all through the precinct or if it is isolated to the specific complainants. To explain this, the commander has the community relations unit randomly call houses all through the precinct and ask how fairly they feel the police treats the public. The commander then compares the information gathered by the random sample to the called parameters for the entire city to explain if his precinct's score is significantly lower than average.

a)  Would the commander conduct a 1-tailed or 2-tailed hypothesis test? Describe why.

b)  Use the information below to conduct a z-test using p=.01 as your alpha level. Make sure you complete all 5 steps and show your work/answers for every step.

 

Sample                        Population

Mean = 2.64               Mean = 2.72

SD = 0.56                    SD = 0.31

n = 86

c)  Measure a 99% confidence interval for the above sample.

 

Posted Date: 3/21/2013 6:33:03 AM | Location : United States







Related Discussions:- Lower than average, Assignment Help, Ask Question on Lower than average, Get Answer, Expert's Help, Lower than average Discussions

Write discussion on Lower than average
Your posts are moderated
Related Questions

what will be the activity of the above said title

How will the decimal point move when 245.398 is multiplied by 100? It is moved two places to the right. While multiplying by multiples of 10, the decimal point is moved to the

BUILD UPON THE CHILDS BACKGROUND :  As you read in previous, each child is unique. Individual children vary in age, level of cognition, background, etc. What implications does thi

Define a Hamilton path. Determine if the following graph has a Hamilton circuit. Ans: A path is known as a Hamiltonian path if it consists of every vertex of the graph e

The measures of the angles of a triangle are in the ratio of 3:4:5. Evaluate of the largest angle. a. 75° b. 37.5° c. 45° d. 60° a. The addition of the measures of t

Differentiation Formulas : We will begin this section with some basic properties and formulas.  We will give the properties & formulas in this section in both "prime" notation &

Wht is Frobenius Number? Start discussion and problems solving in Frobenius Number.

Inflation The inflation rate for a given period can be calculated using the following formula; Inflation = (current retail price index/retail price index in the base year)

HOW MUCH WILL A NEW CAR COST? THE AVERAGE COST OF A NEW CAR IN 1990 WAS $14371. IN 2003 THE AVERAGE COST HAD RISEN TO $22360. WHAT IS THE AMOUNT OF THE MONTHLY PAYMENT? THE AMOUNT