#### Qualitative vs. Quantitative

See the attached file. 1. Describe the following variables as quantitative or qualitative, and describe the scales of measurement. A.)The distance a student commutes from home to the Berkeley campus. B.)The rating of a stock as "strong buy," "buy," "hold," or "sell." C.)The perce...

#### Beginner's statistics

1. For each of the experiments described, let x determine a random variable and use your knowledge of probability to prepare a probability distribution . Use a tree diagram. Two dice are rolled and the total number of points is recorded. 2. According to the Web site of Mars, the makers of M&...

#### Probability and standard deviation calculations

1. A fair die is rolled 2 times. Let A be the event that the outcome of the first roll is an even number. Let B be the event that the outcome of the second roll be less than 2. a. What is the probability that the outcome of the second roll is less than 2 given that the first roll is an even nu...

#### Probability Calculations in Statistics

The time required to complete a certain construction project follows a normal distribution with a mean of 43 weeks and a standard deviation of 3.7 weeks. Use this information to answer questions 1 through 3. 1. What is the probability of the completing the project in no more than 48 weeks? 2...

#### Statistics: Probability Calculations

1. An airliner carries 50 passengers and has door with a height of 70in. Heights of men are normally distributed with a mean of 69.0 in and a standard deviation of 2.8in. a. If an male passenger is randomly selected, find the probability that he can fit through the doorway without bending. The...

#### Discrete Distributions

Share 1 real-world binomial distribution situation and 1 real-world Poisson distribution situation. Be sure to explain why each example is defined as binomial or Poisson. How would you characterize the difference between the two types of distributions?

#### Industrial filling process

The characteristics of an industrial filling process in which an expensive liquid is injected into a container was investigated. The quanitity injected per container is approximately normally distributed with mean 10 units and standard deviation .2 units. Each unit of fill costs \$20 per unit. If a...

#### Identifying a Probability Distribution

Learning is a lifetime activity. For some, it means learning from everyday experiences; for others, it means taking classes in a more traditional atmosphere. The percentage of people participating in organized learning situations during 2002 for each age group is reported here by NIACE. Is this a ...

#### The probability of peas with green pods

The accompanying table describes results from eight offspring peas. The random variable x represents the number of offspring peas with green pods. Table Probabilities of Numbers of Peas with Green Pods Among 8 Offspring Peas x(Number of Peas with Green Pods) P(x) 0 ...

#### Expected Value and Probabilities

Recently, a regional automobile dealership sent out fliers to perspective customers, indicating that they had already won one of three different prizes: a 2008 Kia Optima valued at \$15,000, a \$500 gas card, or a \$5 Wal-Mart shopping card. To claim his or her prize, a prospective customer needed to p...

#### Probabilities and Card Tricks

Consider the experiment of drawing two cards from a deck and adding their values (with ace = 1). a. Describe the outcomes of this experiment. List the elements of the sample space. b. What is the probability of obtaining a total of 5 for the two cards? c. Let A be the event "total card value is...

#### Questions using Western Electric Rules 1 - 5

A TiW layer is deposited on a substrate using a sputtering tool. The following table presents data, in Angstroms, from 20 subgroups of n = 4. (a) Plot an x-bar and R control chart for this process. Performs runs tests to Western Electric rules 1 through 5 in Table 5.1, p. 197 of the textbook. Is...

#### Probability: Word Problems

1. When transmitting messages from a point A to a point B, out of every 40 messages 6 need to be corrected by applying error correcting codes. What is the probability that in a batch of 200 messages sent from A to B, there will be between 38 and 42 messages that will have to be corrected. 2. The ...

#### Gaussian Distribution

Can standard distrubution be used to describe the data set? See attached. Note: (c) 3(j) -- This should have asked you for Q=800 cvs in April (not January) since I didn't give you any January data. Further, my answers were for a January set of data that I was playing with. For the April data ...

#### U. S. families with pets

The following table gives the number of U.S. families, in thousands, with pet dogs, pet cats, and pet birds, by size of family. (Source: Statistical Abstract of the United States 2000, 120th Edition.) Family Size One Member Two Members Three Members Four or More Pet Dog ...

#### Calculating Probability Values

1. Compute the number of ways you can select n = 4 elements from N = II elements. There are _________ways to select 4 elements from 11 elements. (Simpli fy your an swer.) 2. A magazine reported on an independent study of postal workers and violence at post offices. In a sample of 13,000 postal...

#### Probability of Random Selection

Please help me solve this problem and explain how you get to the answer. Thank you. A local dealership currently has 36 used GM, Ford, and Toyota vehicles on the lot. The following data are available: - Twenty six vehicles are cars - Eleven vehicles are GM - Fifteen vehicles are Fords - Thre...

#### Discrete Probability and Discrete Data

A discrete probability is the likelihood that certain discrete data will occur. What is discrete data? Consider a scenario where you could use a discrete probability to predict the likelihood of an event. How would you determine the probability? How could you use this to support your position in a p...

#### Statistics: Should You Get Rental Car Insurance?

1. Support that the service rate to a waiting line system is 10 customers per hour (exponentially distributed). Analyze how the average waiting time is expected to change as the arrival rate varies from two to ten customers per hour (exponentially distributed). 2. Suppose that a car rental agenc...

#### Calculating Probability of Purchases

Historically, 70% of your customers at Rodale Emporium pay for their purchases using credit cars. In a sample of 20 customers, find the probability that a. Exactly 14 customers will pay for their purchases using credit cards. b. At least 10 customers will pay for their purchases using credit c...

#### Finding probability of prescription orders

Pharmacies continually monitor their prescription filling process. A local pharmacy has noted that the time to fill a prescription for a generic antibiotic is normally distributed, with a mean of 13.3 minutes and a standard deviation of 2.8 minutes. a. Find the probability that a prescription fo...

#### Statistics Problem Set: Pop Quizzes and Promotions

1. The female instructors at a large university recently lodged a complaint about the most recent round of promotions from assistant professor to associate professor. An analysis of the relationship between gender and promotion was undertaken which produced the joint probabilities in the following t...