Category Archives: Statistics

What sample size would be required to detect a true mean of 3.5 if we wanted the power to be at least 0.95?

Homework 10 Problems Chapter 9 Problems: 9.2: 3, 6, 7; 9.3: 1, 3, 4, 6; 9.4: 2, 5; 9.5: 3 9.2.3) Output from a software package follows One-Sample Z: Test of μ = 35 versus μ > 35 Assumed standard deviation is 1.7 Variable n Sample Mean Sample Std. Deviation Std Error (SE) of Mean […]

What is the best predicted weight of a bear with a chest size of 39 inches?

Watch Week13 YouTube video-Ch10.1a – Create a Scatterplot in StatCrunch Watch Week13 YouTube video-Ch10.1b – Create a Scatterplot in StatCrunch Watch Week13 YouTube video-Ch10.1c – Determine Strongest Linear Correlation Watch Week13 YouTube video-Ch10.1d – Predict the Linear correlation coefficient Watch Week13 YouTube video-Ch10.2a – Find the Linear Regression Line – Ti84 Watch Week13 YouTube video-Ch10.2b […]

Calculate the average number of claims on any given day, week and month. Let t’ > 0 be an instance of time.

An insurance company has an initial surplus of 100 and premium loading factor of 20%. Assume that claims arrive according to a Poisson process with parameter A = 5 and the size of claims Xi are iid random variables with Xi ,-,, exp( 1-0). The time unit is 1 week. Assume that 1 month is […]

How can solving the problem be helpful to people or contribute to society in some way?

Use these instructions and questions when writing your lab reports to ensure you cover all necessary parts of Engineering Design and the DMAIC process. Define/Ask & Research – Determine the problem or the goal of your work. What are you trying to develop or solve? Do you have a specific goal to attain? Who is […]

Assess the factors that impact mental health in the United States?

Develop tables for each of the statistical test in your study. Apply Linear regression, correlation, descriptive statistics and hypothesis testing to your primary data. Each table must be labeled with a review of the results underneath the table. Strongly suggest that students assign a test to each member of the group for full participation. Assess […]

Describe any problem or issue of the above regression model and explain how to improve the regression model.

Part1-Python Programming Multiple Linear Regression Analysis 1) Download the file ‘bmi’ in the homework folder of the Course Blackboard Read in the file and display the first 5 observations 2) Draw the histograms and pairwise scatter plots of all numeric columns using seaborn pairplot. 3) Check the pairwise correlation coefficients between variables. Interpret the result […]

What is the formula for the test statistic, and the distribution for the test statistic?

Lab Instructions: In this lab, we will begin to develop the concepts found on testing for independence in chapter 6, section 4.  be sure to: Follow all instructions. Answer each question completely. Step 1: Data Collection Complete the survey in the pre-assignment. Make sure that the data is in the correct form for JMP. Step […]

What would be the defining relationship and generator in this design?

ISE 135 In-class exercise (Groups of max. 3 students) Fractional Factorial Design Consider a 25-1 design below. Note that Basic design is already created using 24 runs. Create the 5th column What would be the defining relationship and generator in this design? . Minitab will also tell you what the generator of this /1/2 fractional […]

Describe the model, showing the results of the pertinent hypothesis tests, using a significance level of 0.10.

Linear Regression Analysis Terry Downes owns a commercial cleaning company. He has conducted a survey of customers to determine how satisfied they are with the work performed. He devised a 100-point rating scale with 0 being poor and 100 being excellent service, selected a random sample of 14 customers, and asked them to rate the […]