Park Rangers in a Yellowstone National Park have determined that fawns less than 6 months old have a body weight that is approximately normally distributed with a mean µ = 26.1 kg and standard deviation σ = 4.2 kg. Let x be the weight of a fawn in kilograms. Complete each of the following steps for the word problems below: Rewrite each of the following word problems into a probability expression, such as P(x>30). Convert each of the probability expressions involving x into probability expressions involving z, using the information from the scenario. Sketch a normal curve […]
developer
In this problem, we will find numerical and graphical summaries of the Titanic dataset using R.
1. In this problem, we will find numerical and graphical summaries of the Titanic dataset using R. The dataset consists of information on all the passengers of the ill – fated trans – Atlantic ship Titanic. We are looking at only 3 columns (variables) in the dataset, namely Age, Sex and Survival status of the passengers. The dataset “titanic_as.RData” is (.RData is a convenient R data format) available in the homework folder on Carmen. Load the file using the command: load(“titanic_as.RData”) Note, if you are not in the same directly as the .RData file then you need to put the […]
A tube of Listerine Tartar control toothpast contains 4.2 ounces. As people use the toothpaste, the amount remaining in any tube is random.
A tube of Listerine Tartar control toothpast contains 4.2 ounces. As people use the toothpaste, the amount remaining in any tube is random. Assume the amount left in the ube follows a uniform distribution. a. how much toothpaste would you expect to be remaining in the tubeb. what is the std deviation of the amount remaining??c. what is the likelihood there is less than 3.0 oz remaining?d. what is the probability there is more than 1.5 oz remaining?
University bookstore employees asked 225 students to complete a customer satisfaction survey after these customers bought their books.
University bookstore employees asked 225 students to complete a customer satisfaction survey after these customers bought their books. The bookstore manager wanted to find ways to improve the customer experience. Identify the sample and population for this example.
An airline promotion to business travelers is based on the assumption that no more than two-thirds of business travelers use a laptop computer on…
An airline promotion to business travelers is based on the assumption that no more than two-thirds of business travelers use a laptop computer on overnight business trips. A. What is the sample proportion from an American Express sponsored survey that found 355 of 546 business travelers use a laptop computer on overnight business trips (to 4 decimals)? B. What is the p-value (to 4 decimals)? Hint: you need to find the test statistics first before you calculate the p-value.
