For this assignment, you will utilize statistical technology to work with a series of datasets. You are welcome to use the technology o
For this assignment, you will utilize statistical technology to work with a series of datasets. You are welcome to use the technology of your choice including Excel, Desmos, and Google Sheets. Please follow the instructions below. Once you have completed the assignment, submit your completed document (in .docx or .doc format) using the Submission Link.
Instructions:
- Download the file attached to this assignment. This file contains three questions.
- Copy and paste the graphs and charts for your answers into the document.
- Type your responses to the other questions.
- All of your charts, graphs, and responses to questions should be submitted in a single document.
Module 6 Minitab Assignment 1. According to the CDC, the recommended fluoride concentration in drinking water is 0.7 milligrams of fluoride per liter of water. An advocacy group believes the fluoride concentration in the water in their community is under the recommended concentration. A random sample of 175 water samples are tested and found to have a mean of 0.68 milligrams of fluoride per liter of water and a standard deviation of 0.09. a. State the null and alternative hypothesis. b. What type of test will be performed? (Right tail, left tail, two tail) c. State the test statistic and p-value. Give at least 4 decimal places for each value. d. At 𝛼 = 0.05, what is your decision? Do you reject or fail to reject the null hypothesis? e. State your conclusion. 2. A local community is voting on a proposed new building project. The project will proceed if it receives at least 70% approval. A preliminary survey conducted on a random sample of 400 residents found that 294 people are in favor of the project. The city council wants to determine if the true proportion of residents who support the project is significantly more than 70%. Using a significance level of α=0.05 perform a hypothesis test to evaluate the council’s concern. a. State the null and alternative hypothesis. b. What type of test will be performed? (Right tail, left tail, two tail) c. State the test statistic and p-value. d. At 𝛼 = 0.05, what is your decision? Do you reject or fail to reject the null hypothesis? e. State your conclusion. 3. The mean monthly weight loss for 64 males taking a weight loss drug was 5.3 pounds with a standard deviation of 0.8 pounds. The mean monthly weight loss for 61 females taking the same weight loss drug was 5.1 pounds with a standard deviation of 1.1 pounds. At the 1% significance level, can you reject the claim that males and females have equal weight loss averages on the medication? a. State the null and alternative hypothesis. b. What type of test will be performed? (Right tail, left tail, two tail) c. State the test statistic and p-value. d. What is your decision? Do you reject or fail to reject the null hypothesis? e. State your conclusion.
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