Fall2011Exam12versions

Fall2011Exam12versions - Fall 2011 FORM F Name Last:_...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Fall 2011 FORM F Name Last:_____________________ First: ______________________ Exam 1: Ch. 1, 2, 3 Section: ___________________ Directions: • Put your NAME and SECTION on THIS EXAM and on your SCANTRON. • Write FORM F on your SCANTRON. • Each question has exactly one BEST answer. There are 21 questions. • You may write on this exam. There is no scratch paper allowed. • Each question is worth 5 points for a total of 105 points. This includes 5 bonus points! • If you have no note page, you must write NO NOTES on your SCANTRON. • Put your SCANTRON and PAGE of NOTES inside your EXAM. When your exam is returned, you will get back all materials you turned in. • Turn your cell phone OFF. Any noise from a cell phone will signal that your exam is over. FAILURE TO FOLLOW ALL OF THE ABOVE INSTRUCTIONS WILL COST YOU THE 5 BONUS POINTS. 1. According to Approaching Democracy , by Larry Berman and Bruce Murphy, of the countries in existence in 2006, 46% were considered free countries and 24% had Muslim majorities. Of the countries with Muslim majorities, 6.5% were considered free countries. Find the probability that a randomly chosen country is a free country and has a Muslim majority. A. 0.1104 B. 0.0299 C. 0.1150 D. 0.0156 Questions 2 – 4 refer to the following: According to a survey published in National Health Statistics in 2009 ( http://www.cdc.gov/nchs/data/nhsr/nhsr015.pdf ), the percent of adolescents aged 12 – 17 in the United States who had ever tried a smoking a cigarette is 39.9%. 2. Define the population. A. All children in the United States B. All adolescents aged 12 – 17 in the United States C. All high school students in the United States D. All adolescent smokers between age 12 – 17 in the United States 3. The parameter that is of interest here is: A. The percent of adolescents aged 12 – 17 in the United States who had ever tried smoking a cigarette. B. The average number of adolescents aged 12 – 17 in the United States who had ever tried smoking a cigarette. C. The percent of adolescents aged 12-17 in a randomly selected sample who had ever tried smoking a cigarette. D. The average number of adolescents aged 12-17 in a randomly selected sample. 4. The number of cigarettes smoked on one day is what kind of data? A. Qualitative B. Quantitative – continuous C. Quantitative – discrete 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Questions 5 – 7 refer to the following: Suppose a sample of 50 randomly selected students were asked the number of ‘tweets’ they made yesterday. The results were as follows: # of “tweets” Frequency 0 17 1 9 2 3 4 4 5 5 3 6 2 5. The average and standard deviation are: A. Average = 1.76, standard deviation = 1.7907 B. Average = 1.76, standard deviation = 1.7727 C. Average = 3, standard deviation = 2.16 D. Average = 2, standard deviation = 2 6. A histogram of the data will be A. Skewed left B. Skewed right C. Bimodal D. Symmetric 7. What percent of the students sent at least 4 ‘tweets’? A. 20%
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 11

Fall2011Exam12versions - Fall 2011 FORM F Name Last:_...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online