Stats Help for College-level Students

Simple linear regression

I. The Director of the Work/Study Program wanted to develop a model to predict a student's grade point average, gpa, in relation to the number of hours worked. Choose a random sample of 20 students who work and are full-time students from our population in order to study the relationship between number of hours worked and gpa. ...continues

Hypothesis - testing methodology

I. The Dean of Students is interested in how long students spend commuting to school each day because the administration has been considering building dormitories. Since this college is highly selective and draws students from all the boroughs as well as the surrounding areas. A study was undertaken to see if the travel time is ...continues

Integer Problem

I need to verify my work and need help with work on Exercises 1,2,3 from attached PDF file and Excel file. Please help soon. Please find the attached zip file for all the related files. Guidelines for the Integer problem Please analyze the case and write a report addressing the issues raised in the case problems. Please u ...continues

Integer Problem

I need to verify my work and need help with work on Exercises 4,5,6,7 from attached PDF file and Excel file. Please help soon. Please find the attached zip file for all the related files. Guidelines for the Integer problem Please analyze the case and write a report addressing the issues raised in the case problems. Pleas ...continues

Simulation Problem

I need to verify my work and need help with work on Simulation Problem. Please help soon. Please find the attached zip file for all the related files and details. Guidelines for the simulation problem Please analyze the case and write a report addressing the issues raised in the case problems. Please use: A Microsoft ...continues

Descriptive Statistics

ALL VARIABLE NAMES ARE REFERENCES TO THE VARIABLES OF THE DATA. SELECT THE SAMPLES FROM THE POPULATION. ( Population of 1 through 74, which is in the EXCEL FILE attachment.) (1) Using the size of the group as the sample size, select 10 different random samples of the same size. To do this, number each person in the populatio ...continues

Normal Distribution

Assume that X follows normal distribution N(12,4), find a such that P(X>a)=0.5

sampling distributions of estimates

Consider an acceptance-sampling scheme in which a factory takes delivery of a batch of components if a random sample of 400 components contains fewer than M defectives. Otherwise the batch is returned tot he supplier. Suppose the factory manager wants to set M so that there is no more than a 10% risk of accepting a batch that ...continues

expected value

Consider the experiment of throwing an ideal die three times(all outcomes are equally likely). Let X and M denote the mean and the median respectively, of the three scores obtained. a) find E(X)

standard deviation

Here are 2 sets of numbers: 4 4 4.333 5 4 4 3.333 3 4 5 3 2 2.666 3 4 5 3.333 3 3 2 Find the sample means and sample standard deviations of these t ...continues