Category: Mathematics and Statistics : Statistics

Region: Start by picking one region from the following list of regions: West South Central, West North Central, East South Central, East North Central, Mid Atlantic Purpose: What is the purpose of your analysis? Sample: Define your sample. Take a random sample of 500 house sales for your region. Describe what is included in your sample (i.e., states,…

Overview In this project, you will apply inference methods for means to test your hypotheses about the housing sales market for a region of the United States. You will use appropriate sampling and statistical methods. Scenario You have been hired by your regional real estate company to determine if your region’s housing prices and housing…

Read the following scenario and complete each of the problems below: A flashlight company claims that the new bulb in its heavy duty flashlight will average 246 hours of light. A statistics student decides that he/she wants to test this claim at a 5% level of significance to determine if there is evidence to support…

Smith Co had retained earnings of 60,000 at the end of the current year. For the current year, the income was 30,000 and dividends were 10,000. What was the balance in the retained earnings at the end of the prior year?

Use the z-table to determine the following probabilities. Sketch a normal curve for each problem with the appropriate probability area shaded. 1. P(z > 2.34) 2. P(z < -1.56) 3. P(z = 1.23) 4. P(-1.82 < z < 0.79) 5. Determine the z-score that corresponds with a 67% probability. Read the following scenario: Park Rangers…

what is the most precise correct statement that you can make about the numerical value of the median of the data from source 2? Do not explain your answer. Hint: Here is a correct statement: The median is between 0 and 20. This statement is not precise enough to receive any credit

what is the most precise correct statement that you can make about the numerical value of the median of the data from source 2? Do not explain your answer. Hint: Here is a correct statement: The median is between 0 and 20. This statement is not precise enough to receive any credit

Suppose you are told that a company has produced widgets that have a normally distributed weight with mean of 74.5 ounces and a standard deviation of 3.1 ounces. Choose a number randomly from 60 to 90 and determine the corresponding z-score. Write a response to the following questions: If they consider a widget defective when…

Name: [Type your name here] This worksheet asks you to formulate a research question and a hypothesis. Read the instructions carefully, fill in the appropriate fields below, and then submit this document to the assignment inbox.  Part I: My Research Question Review “Guidelines for Research Questions.” Remember, research questions are usually open-ended and focus on…

Write a response to the following questions: Explain the difference between discrete and continuous random variables. Provide a real-world example of a discrete random variable that pertains to your job, a hobby, etc. How does this variable impact you? Provide a real-world example of a continuous random variable that pertains to your job, a hobby,…