Sampling Frequency Distributions And Graphs
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Question 1 (1 point)
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Demarion Santana is interested in studying the growth rates of capsicum annuum (pepper) plants under bridges in California. He randomly selects 50 bridges in California and records the frequency, height, and number of peppers on any plants growing under these bridges. His results were published in the Almanac of Questionable Statistics, Vol 1 (2016). What is the population in this study?
Question 1 options:
All capsicum annuum plants growing anywhere in California
All capsicum annuum plants growing under bridges in California
Readers of the Almanac of Questionable Statistics
Capsicum annuum plants growing under the 50 bridges randomly selected to be included in the study
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Question 2 (1 point)
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Gwen is interested in the effect of bananas on the speed and endurance of high school cheerleaders. She recruits 20 cheerleaders from high schools in California. Each cheerleader was asked to run as many laps as they could in 20 minutes on a standard 100M track. Two weeks later the same cheerleaders were asked to run as many laps as they could in 20 minutes, but were asked to eat a banana 10 minutes prior to starting. The number of laps completed (to the nearest quarter lap) was recorded. What is the sample of this study?
Question 2 options:
The 20 cheerleaders measured
All cheerleaders in California
Banana aficionados
All cheerleaders in California who regularly eat bananas
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Question 3 (1 point)
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Huck Finn is interested in the average length of catfish in the Mississippi river bordering St. Louis. To collect his sample, Huck breaks the river into 5 regions and catches 8 catfish from each region. What method did Huck use to select his sample?
Question 3 options:
Systematic
Stratified
Simple Random Sample
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Question 4 (1 point)
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Zaphod Beeblebrox has recently purchased a second-hand ballpoint pen business. In the first month, they purchased the following pens.
Color
Count
Black
153
Blue
972
Red
978
Green
268
UltraViolet
237
Purple
737
What is the relative frequency of purple pens purchased?
Answer in decimal form. Round to 3 decimal places as needed.
Your Answer:
Question 4 options:
Answer
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