Question

In: Statistics and Probability

A student group started a class project that needs to compare the ages of male and...

A student group started a class project that needs to compare the ages of male and female prisoners. The following are the ages (in years) of randomly selected male and female prisoners in a certain federal prison. Is there sufficient evidence to conclude the difference in the means (average age) is statistically significant? use 5% (α = 0.05) significance level.

Male prisoners: 29, 25, 17, 36, 41, 25, 32, 29, 38, 34, 24, 27, 29.

Female prisners: 41, 41, 37, 29, 30, 38, 39, 10, 29, 55, 29.

a) Write the null hypothesis and alternative hypothesis to test the above claim.

b) What is the value of the test statistic?

c) What is the degrees of freedom of the t distribution of the test statistic?

d) What is the p-value?

e) Write your conclusion and express in terms of the evidence for the indicated calim.

Solutions

Expert Solution


Related Solutions

A student group started a class project that needs to compare the ages of male and...
A student group started a class project that needs to compare the ages of male and female prisoners. The following are the ages (in years) of randomly selected male and female prisoners in a certain federal prison. Is there sufficient evidence to conclude the difference in the means (average age) is statistically significant? use 5% (α = 0.05) significance level. Male prisoners: 29, 25, 17, 36, 41, 25, 32, 29, 38, 34, 24, 27, 29. Female prisners: 41, 41, 37,...
Using Python Define a Student class. A Student class needs to have two attributes, the student_name...
Using Python Define a Student class. A Student class needs to have two attributes, the student_name and strudent_grade . It also has three methods as follows: set_grade(grade) that sets the grade of the student. get_grade returns the grade of the student. print_student_info that print the name and grade of student in a formatted string. In the math_utils.py file define a function called average_grade(roster) . This method accepts as input a list of Student Objects and returns the average of the...
A random sample 11 student cars (group 1) were found to have ages with a mean...
A random sample 11 student cars (group 1) were found to have ages with a mean of 7 years and a standard deviation of 3.4 years, while second, independent random sample of 10 faculty cars (group 2) were found to have ages with a mean of 5.2 years and a standard deviation of 3.5 years. You may assume that car ages for both groups are approximately normally distributed and that the two population variances are equal. 1. Use a 0.01...
Each student need to get a partner from the class and create a team that needs...
Each student need to get a partner from the class and create a team that needs to use Excel from and read how to prepare a: Frequency Histogram, Dot diagram, Stem and Leaf diagram. Each member of the team needs to collect 20 samples values of any variable and prepare a report. * Frequency Histogram (5 bins, Intervals or class) Steam and Leaf Diagram Dot Diagram Identify the concentration and variation tendencies from the data charts.
For a project in his statistics class, a student is attempting to create a formula for...
For a project in his statistics class, a student is attempting to create a formula for the number of cars in the dorm parking lot that are either sedans, SUVs or pickup trucks.  His formula states that there should be 20% sedans, 55% SUVs and 25% pickups. To validate his formula, he finds the following actual values for the 100 vehicles in the lot: Sedan: 25 SUV: 45 Pickup: 30 Can we believe that his formula is correct? Use an alpha...
Locate your Student project from the previous in-class assignment. You will add a new class to...
Locate your Student project from the previous in-class assignment. You will add a new class to that project. 1. Create a class called Course. It should have a field to hold an ArrayList of Student objects. 2. Create a constructor for Course that accepts an ArrayList of Student objects, and set field to the parameter. 3. In the Course class, create a method called addStudent(Student s). This should add the parameter "s" to the ArrayList of Student objects. 4. In...
As a first-year nursing student, you are a member of class learning group. In finding ways...
As a first-year nursing student, you are a member of class learning group. In finding ways to modify and improve learning outcomes of the group, explain how learning activities in your group can be promoted from the following perspectives in psychology. A. Cognitive perspective B. Socio-cultural perspective C. Psychodynamic perspective D. Behavioural perspective
A technology student project group worked with a machine shop that employs a CNC lathe in...
A technology student project group worked with a machine shop that employs a CNC lathe in the machining of a part produced for a heavy equipment manufacturer. Some summary statistics for a diameter on the part obtained from 25 samples of n=4 parts turned on the lathe are given below. The units are inches. Sample                                   x-bar                                       R                  1                                      1.18093                                  .0001                  2                                      1.18085                                  .0002                  3                                      1.18095                                  .0002...
A technology student project group worked with a machine shop that employs a CNC lathe in...
A technology student project group worked with a machine shop that employs a CNC lathe in the machining of a part produced for a heavy equipment manufacturer. Some summary statistics for a diameter on the part obtained from 25 samples of n=4 parts turned on the lathe are given below. The units are inches. Sample                                   x-bar                                       R                  1                                      1.18093                                  .0001                  2                                      1.18085                                  .0002                  3                                      1.18095                                  .0002...
A student needs 62.5 g of zinc sulfide, a white pigment, for an art project. He...
A student needs 62.5 g of zinc sulfide, a white pigment, for an art project. He can synthesize it using the reaction: Na2S (aq) + Zn(NO3)2 (aq) = ZnS(s) + NaNO3 (aq) (not balanced) (78.04) (189.4) (97.44) (85.00) How many grams of zinc nitrate will he need if the percent yield of zinc sulfide is 85.0 %?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT