VCU STAT 210 - Test 1 Practice Test #2(1) (4 pages)

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Test 1 Practice Test #2(1)



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Test 1 Practice Test #2(1)

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Pages:
4
School:
Virginia Commonwealth University
Course:
Stat 210 - Basic Practice of Statistics
Basic Practice of Statistics Documents
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Test 1 Practice Test 2 Peanuts is a syndicated daily and Sunday American comic strip written and illustrated by Charles M Schulz which ran from October 2 1950 to February 13 2000 continuing in reruns afterward The strip is the most popular and influential in the history of the comic strip with 17 897 strips published in all making it arguably the longest story ever told by one human being At its peak Peanuts ran in over 2 600 newspapers with a readership of 355 million in 75 countries and was translated into 21 languages It helped to cement the fourpanel gag strip as the standard in the United States and together with its merchandise earned Schulz more than 1 billion Reprints of the strip are still syndicated and run in almost every U S newspaper Peanuts achieved considerable success with its television specials several of which including A Charlie Brown Christmas and It s the Great Pumpkin Charlie Brown won or were nominated for Emmy Awards The holiday specials remain popular and are currently broadcast on ABC in the United States during the corresponding seasons The Peanuts franchise met acclaim in theatre with the stage musical You re a Good Man Charlie Brown being a successful and often performed production Peanuts has been described as the most shining example of the American success story in the comic strip field this is ironic given its theme is the great American unsuccess story The main character Charlie Brown is meek nervous and lacks self confidence He is unable to fly a kite win a baseball game or kick a football Wikipedia 1 Of interest is to determine the proportion of all current VCU students who have ever watched a Peanuts special on television Based on this information what is the population of interest 2 Based on the information in question 1 what is the parameter of interest 3 A sample of 500 current VCU students was selected and each student was asked whether or not they have ever watched a Peanuts special on television In this sample 385 students or 77 indicated that they have watched a Peanuts special on television In this scenario is 77 an example of a parameter or a statistic A Parameter B Statistic 4 To select the sample described in question 3 the following was done On the Blackboard sites of the ten STAT 210 sections a poll question was set up that read Have you ever watched a Peanuts special on television 500 of the 1289 enrolled students responded to the poll by clicking on either Yes or No What type of sampling procedure is this an example of A Volunteer response sampling B Simple random sampling C Haphazard sampling D Multistage random sampling E Stratified random sampling 5 The 385 students who responded that they have watched at least one Peanuts special on television were then asked how many Peanuts specials they had watched In the box they were asked to enter a whole number 1 2 3 4 etc The number of Peanuts specials that a student has watched is what type of characteristic A Categorical variable B Discrete quantitative variable C Continuous quantitative variable D Constant 6 The 385 students who responded that they have watched at least one Peanuts special on television were also asked where they were when they first remember watching a Peanuts special on television Possible answers were at home at grandparents home at a friend s home at school at a place of worship or other The place where a student first watched a Peanuts special on television is what type of characteristic A Categorical variable B Discrete quantitative variable C Continuous quantitative variable D Constant 7 Suppose in the sample of 500 current VCU students all are undergraduate students Hence no graduate students medical students or students in any other professional program were selected If the viewership and opinions of undergraduate students regarding Peanuts specials on television is different from that of the other student classification groups what type of bias could this cause A Selection bias B Response bias C Nonresponse bias D Confounding bias One of the classic Peanuts storylines has Lucy holding a football while Charlie Brown runs up and attempts to kick the ball On each occasion at the last second Lucy lifts the ball so Charlie Brown misses the ball and falls on his back see the cartoon below Of interest is to determine the percentage of all 193 415 football players who have attempted to kick a field goal or extra point in a game and who have missed the ball 8 Based on the information above what is the population of interest 9 Based on the information above question 8 what is the parameter of interest 10 Research finds only 128 out of 193 415 football players who have attempted to kick a ball in a game have actually completely missed the ball while kicking In this scenario is 128 an example of a parameter or a statistic A Parameter B Statistic 11 The percentage of all football players who have attempted to kick a field goal or extra point in a game and who have missed the ball is what type of characteristic A Categorical variable B Discrete quantitative variable C Continuous quantitative variable D Constant 12 Of interest is to determine the mean number of times that all players who have kicked a ball in a game have actually kicked the ball This mean cannot be determined because each person who has ever kicked a ball in a game cannot be contacted Therefore a sample of 200 kickers was selected as follows Kickers were divided into four groups by the most advanced level of kicking they had ever done professional college high school or recreational Based on the number in each group the following numbers of kickers were randomly selected from each group professional kickers 5 college kickers 36 high school kickers 114 recreational kickers 45 What type of sampling procedure is this an example of A Volunteer response sampling B Simple random sampling C Haphazard sampling D Multistage random sampling E Stratified random sampling 13 Consider the sampling situation described in question 12 Of the 41 professional and college kickers none of them stated that they had ever missed the ball while attempting to kick the ball However the belief is that they would all be too embarrassed to admit this in front of their teammates and hence their answers are not accurate In this scenario what type of bias could this cause A Selection bias B Response bias C Nonresponse bias D Confounding bias 14 A total of 1952 players were active in National Football League NFL games during the


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