Designing Experiment Homework 5 Article & Data This homework is partially based on Ferraro and Price (2013) Review of Economics and Statistics, which you used for HW1-HW3, and partially based on Thornton (2008) American Economic Review, which you used for HW3-HW4. Individual Questions Questions on Ferraro and Price In the Ferraro-Price data set, the variable […]
Provide the symbol form of your null and alternative hypotheses for the two-tailed test testing if there is a difference between the population means.
Math 109 Project For this semester-long project, collect and compare quantitative data from two populations. Use statistical methods to determine if there a difference between the means of the two populations. Present your results and conclusions for this second part of project in an essay format that is at least 800 words in length. Do […]
Research something important in your life right now, come up with at least 15 data entries. Create a video explaining your data and how to calculate the point estimate for the population mean.
W6 Discussion Question 1: Can you teach a confidence interval? Post: Sometimes, teaching other students is the best way to show that you understand something. If you can teach your classmates to learn from your instruction, then you are truly mastering the topic. This week, research something important in your life right now. (Examples include […]
Define H0 : μ = 30 and H1 : μ > 30. What is the probability of observing a sample mean X = 33 or larger if H0 is true?
PSYC 2317: Statistical Methods for Psychology 1. Suppose we are sampling from a population that is known to be normal with standard deviation σ = 10. However, the mean μ is unknown, so we’ll have to estimate it.(a) A sample of N = 9 is drawn and is found to have mean X = 25. […]
Explain why a bulb that lasted 620 hours is NOT unusual, even though it is NOT in the confidence interval?
ASSIGNMENT From the list below, choose one problem, write it down, and solve it in detail (show all of your steps). You should pick a problem that has not yet been attempted if you can. Label your solution with the corresponding question number. In your solutions, you are only to use the math concepts that […]
Construct a frequency distribution using 5 –8 classes. Create 2 different but appropriate visual representations of your data (pie chart, bar graph, etc).
Mini Study Part 2 1. Treat your data just as you would one of the datasets from the homework. Be sure you include appropriate measures of central tendency and dispersion etc. 2 Construct a frequency distribution using 5 –8 classes. 3 Create 2 different but appropriate visual representations of your data (pie chart, bar graph, […]
Is the number of sticks of gum a person chews per day actually greater than 8? Show hypothesis, test statistic or P-value, and the decision about the claim.
STA2023 EXAM 3-Part 2 1-) A study was conducted to determine the number of cell phones each household has. The data are shown here. Number of cell phones 0 1 2 3 4 Frequency 2 30 48 13 7 Construct a probability distribution. Find the mean of the probability distribution. 2-) If 60% of all […]
Calculate the upper and lower limits of the box-plot to 4 decimal places – show your calculations. Give an explanation as to what this means in relation to this problem.
Professional Report Watch the video on writing reports. The video includes information on more than just the APA7 professional report. The question is as follows: AAA reported that the average price of regular gasoline is Pennsylvania during Memorial Day weekend in 2010 was $2.65 per gallon. The following data show the price per gallon of […]
Construct a confidence interval for the difference of the two means using the method described in class for normal data with different variances.
Assignment 5 Confidence intervals Show all work, when statkey is used, include a screenprint of your output. If you do not include the screenprint it counts as not working the problem. 1: The data for this problem is in ques1.csv in canvas Download the data to your computer and upload it to statkey, bootstrap confidence […]
Based on your findings on Part 1 and 2, does it appear the employees who do not stay at least 3 years are underpaid than the employees who do stay at least 3 years. Explain.
Business Question Demand for systems analysts in the consulting industry is greater than ever. Graduates with a combination of business and computer knowledge—some even from liberal arts programs—are getting great offers from consulting companies. Once these people are hired, they frequently switch from one company to another as competing companies lure them away with even […]