Today’s Agenda Random variable review Overview of clicker experiment and informed consent Survey of attitudes toward statistics and clickers Comprehensive.

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Presentation transcript:

Today’s Agenda Random variable review Overview of clicker experiment and informed consent Survey of attitudes toward statistics and clickers Comprehensive Assessment of Outcomes for a first course in Statistics (CAOS)

Random Variable Review: The Qwizdom Years

Problem 1: In which of the following situations is X a binomial random variable? A. Let X be the number of football games the Wolverines will win next season. B. Let X be the number of heads that turn up on an unfair coin in 10 flips. C. Let X be the number of flips necessary to get 5 heads on a fair coin. D.Let X be the number of spades in a hand of 7 dealt from a standard deck of cards.

Problem 2 Suppose there is a new game you can play. You can win $10 with probability 0.1 or $100 with probability Otherwise, you lose (i.e. you win $0). Let X be the random variable representing the amount of money you win.

What is the probability that you win $0? A) 0 B) 0.1 C) 0.89 D) 0.99 E) 1

What is the expected amount of money you will win? A) $0 B) $1 C) $2 D) $10 E) $100

Problem 3 Suppose that lengths of tails of adult Ring-tailed Lemurs are normally distributed with mean 50 cm and standard deviation 5 cm. Photo From: "lemur." Online Photograph. Britannica Student Encyclopædia..

What is the probability that a randomly selected adult ring-tailed lemur has a tail that is 45 cm or shorter? A) 0 B) C) D) 1

Two adult ring-tailed lemurs will be randomly selected. What is the probability that both lemurs will have a tail that is 55 cm or longer? A) B) C) D)

Overview of the Stat 350 Clicker Experiment

You are invited to be part of a research study on the effectiveness of clickers in helping to engage students in the Statistics classroom and learn the subject. You were selected as a possible participant because you are enrolled in STATS 350. This study is being conducted by:  Herle McGowan, M.A., Department of Statistics, Statistics 350 Instructor  Brenda Gunderson, Ph.D., Department of Statistics, Statistics 350 Instructor Please read the Informed Consent document now…

In Summary… Providing consent does not mean extra work for you (i.e. no work beyond normal course requirements)  Everyone will complete the same surveys & assessments, and have the same extra-credit opportunities. Providing consent does mean we can use your data which we collect from surveys, clicker responses, in-lab reviews, and CAOS assessments - in the research project.  This could help us learn more about the best ways to use clickers. In any analysis or reports we may publish using this data, it will not be possible to identify individual students.

Questions? You may ask any questions about the study now. If you have more questions later, contact:  Herle McGowan, 258 West Hall, OR  Brenda Gunderson, 445A West Hall, ,

Consent Please print your name on the document  This does not signal your permission to use your data in this study; only your signature does that If you consent to have the data collected from surveys, clicker responses, in-lab reviews, and CAOS assessments used in this study:  Please sign the Informed Consent document If you would not like to have your data used in this study:  Do not sign the consent form Please return the consent form (signed or not) to me now. For your reference, a copy of this form is available on CTools>Lab Info.

Now… We would like to learn more about you  About your attitudes towards Statistics & clickers  About your basic knowledge of Statistics First, go to CTools>Lab Info and find the link:  Stat 350 Early Attitudes Then, go to CTools>Lab Info and find the link:  Stat 350 Early Understanding Use your best judgment to answer every question When you have completed the questions, stop up to pick up your HW 1!